Greetings
TeamViewer after start not always connected. It happens randomly.

Kernel:
vitaliy@B250G:~$ uname -a
Linux B250G 4.19.0-5-amd64 #1 SMP Debian 4.19.37-5 (2019-06-19) x86_64 GNU/Linux
Here is logs, where is no connection
gui.log:
(TeamViewer:4713): Gtk-WARNING **: 10:55:51.120: Theme parsing error: gtk-widgets.css:186:14: not a number
(TeamViewer:4713): Gtk-WARNING **: 10:55:51.121: Theme parsing error: gtk-widgets.css:186:14: Expected a string.
(TeamViewer:4713): Gtk-WARNING **: 10:55:51.123: Theme parsing error: gtk-widgets.css:2749:24: not a number
(TeamViewer:4713): Gtk-WARNING **: 10:55:51.123: Theme parsing error: gtk-widgets.css:2749:24: Expected a string.
(TeamViewer:4713): Gtk-WARNING **: 10:55:51.123: Theme parsing error: gtk-widgets.css:2940:14: not a number
(TeamViewer:4713): Gtk-WARNING **: 10:55:51.123: Theme parsing error: gtk-widgets.css:2940:14: Expected a string.
(TeamViewer:4713): Gtk-WARNING **: 10:55:51.123: Theme parsing error: gtk-widgets.css:2946:17: Expected a string.
(TeamViewer:4713): Gtk-WARNING **: 10:55:51.125: Theme parsing error: gtk-widgets.css:4083:14: not a number
(TeamViewer:4713): Gtk-WARNING **: 10:55:51.125: Theme parsing error: gtk-widgets.css:4083:14: Expected a string.
(TeamViewer:4713): Gtk-WARNING **: 10:55:51.125: Theme parsing error: gtk-widgets.css:4088:17: Expected a string.
(TeamViewer:4713): Gtk-WARNING **: 10:55:51.125: Theme parsing error: gtk-widgets.css:4729:14: not a number
(TeamViewer:4713): Gtk-WARNING **: 10:55:51.125: Theme parsing error: gtk-widgets.css:4729:14: Expected a string.
(TeamViewer:4713): Gtk-WARNING **: 10:55:51.127: Theme parsing error: xfce.css:47:16: not a number
(TeamViewer:4713): Gtk-WARNING **: 10:55:51.127: Theme parsing error: xfce.css:47:16: Expected a string.
(TeamViewer:4713): Gtk-WARNING **: 10:55:51.127: Theme parsing error: lightdm-gtk-greeter.css:16:14: not a number
(TeamViewer:4713): Gtk-WARNING **: 10:55:51.127: Theme parsing error: lightdm-gtk-greeter.css:16:14: Expected a string.
(TeamViewer:4713): Gtk-WARNING **: 10:55:51.127: Theme parsing error: lightdm-gtk-greeter.css:26:14: not a number
(TeamViewer:4713): Gtk-WARNING **: 10:55:51.127: Theme parsing error: lightdm-gtk-greeter.css:26:14: Expected a string.
(TeamViewer:4713): Gtk-WARNING **: 10:55:51.127: Theme parsing error: lightdm-gtk-greeter.css:40:16: not a number
(TeamViewer:4713): Gtk-WARNING **: 10:55:51.127: Theme parsing error: lightdm-gtk-greeter.css:40:16: Expected a string.
(TeamViewer:4713): Gtk-WARNING **: 10:55:51.127: Theme parsing error: lightdm-gtk-greeter.css:96:14: Expected a string.
(TeamViewer:4713): Gtk-WARNING **: 10:55:51.127: Theme parsing error: lightdm-gtk-greeter.css:100:16: not a number
(TeamViewer:4713): Gtk-WARNING **: 10:55:51.127: Theme parsing error: lightdm-gtk-greeter.css:100:16: Expected a string.
(TeamViewer:4713): Gtk-WARNING **: 10:55:51.127: Theme parsing error: lightdm-gtk-greeter.css:279:14: not a number
(TeamViewer:4713): Gtk-WARNING **: 10:55:51.127: Theme parsing error: lightdm-gtk-greeter.css:279:14: Expected a string.
QSGContext::initialize: stencil buffer support missing, expect rendering errors
QSystemTrayIcon::setVisible: No Icon set
startup.log:
Init...
TeamViewer: 14.3.4730 - DEB
Profile: /home/vitaliy (vitaliy)
Desktop: DS: 'lightdm-xsession' XDG: 'XFCE'
XServer TTY: 7
ok (info)
CheckCPU: SSE2 support: yes
ok (profile)
TeamViewer14_Logfile.log:
2019/07/10 10:55:51.074 4713 **Please do not post TeamViewer IDs**39648 GX0 Logger started.
2019/07/10 10:55:51.075 4713 **Please do not post TeamViewer IDs**39648 GX0 Found 0 stack dump files ...
2019/07/10 10:55:51.075 4713 **Please do not post TeamViewer IDs**39648 GX0 Found 0 core dump files ...
2019/07/10 10:55:51.077 4713 **Please do not post TeamViewer IDs**39648 GX0 systemd: logind service available
2019/07/10 10:55:51.078 4713 **Please do not post TeamViewer IDs**39648 GX0 systemd: New seat seat0 [path=/org/freedesktop/login1/seat/seat0, activeSession='2', canGraphical=1, canTTY=1, canMultiSession=1]
2019/07/10 10:55:51.079 4713 **Please do not post TeamViewer IDs**39648 GX0 LogindSessionInfo: New session LogindSessionInfo [id=2 user=vitaliy state=user active=1 reliable=1 infoId=**Please do not post TeamViewer IDs**] [path=/org/freedesktop/login1/session/_32 TTY= seat=seat0 display=:0 vtnr=7 owner=[SysUser: vitaliy [uid=1000, gid=1000 home=/home/vitaliy gecos=vitaliy,,, shell=/bin/bash]] idle=0(0) active=1 type=x11 class=user state=active timestamp=**Please do not post TeamViewer IDs**331007 service=lightdm defaultCG= leader=695 audit=2 remote=0 rHost= rUser= killProc=0]
2019/07/10 10:55:51.080 4713 **Please do not post TeamViewer IDs**39648 GX0 SysSessionInfoManager: observing sessions from logind is marked as reliable
2019/07/10 10:55:51.080 4713 **Please do not post TeamViewer IDs**39648 GX0 SysSessionInfoManager: Session Information provided by VT [priority: 2]
2019/07/10 10:55:51.081 4713 **Please do not post TeamViewer IDs**39648 GX0 SysSessionInfoManager::SessionAdded: adding session XSession: 0 [SysSession **Please do not post TeamViewer IDs** [type=88 vt=7 tty= pseudotty=0 info=1 id=2 user=vitaliy state=user active=1 reliable=1]]
2019/07/10 10:55:51.081 4713 **Please do not post TeamViewer IDs**39648 GX0 SysSessionInfoManager::SessionAdded: adding session SysSession **Please do not post TeamViewer IDs** [type=70 vt=7 tty=/dev/tty0 pseudotty=0 info=1 id=/dev/fb0 user=root state=greeter active=0 reliable=1]
2019/07/10 10:55:51.082 4713 **Please do not post TeamViewer IDs**39648 GX0 SysSessionInfoManager::GetOwnProcessSession: own session cache set to '**Please do not post TeamViewer IDs**'
2019/07/10 10:55:51.082 4713 **Please do not post TeamViewer IDs**39648 GX0 Running on Qt 5.11.3
2019/07/10 10:55:51.143 4713 **Please do not post TeamViewer IDs**39648 GX0 Initialised XRandR extension 1.5 (base=89 error=147)
2019/07/10 10:55:51.174 4713 **Please do not post TeamViewer IDs**39648 GX0 MonitorInfo: [XRandR 1.2] CRTC HDMI-1 1920x1080@60Hz [0, 0, 1920, 1080] - 1
2019/07/10 10:55:51.174 4713 **Please do not post TeamViewer IDs**39648 GX0 MonitorInfo: [XRandR 1.2] CRTC DVI-D-0 1920x1080@60Hz [1920, 0, 3840, 1080] - 1
2019/07/10 10:55:51.174 4713 **Please do not post TeamViewer IDs**39648 GX0 MonitorInfo: [XRandR 1.2] CRTC 2 has no outputs
2019/07/10 10:55:51.174 4713 **Please do not post TeamViewer IDs**39648 GX0 MonitorInfo: [XRandR 1.2] CRTC 3 has no outputs
2019/07/10 10:55:51.174 4713 **Please do not post TeamViewer IDs**39648 GX0 Virtual Desktop [0, 0, 3840, 1080]
2019/07/10 10:55:51.206 4713 **Please do not post TeamViewer IDs**39648 GX0 MonitorInfo: [XRandR 1.2] CRTC HDMI-1 1920x1080@60Hz [0, 0, 1920, 1080] - 1
2019/07/10 10:55:51.206 4713 **Please do not post TeamViewer IDs**39648 GX0 MonitorInfo: [XRandR 1.2] CRTC DVI-D-0 1920x1080@60Hz [1920, 0, 3840, 1080] - 1
2019/07/10 10:55:51.206 4713 **Please do not post TeamViewer IDs**39648 GX0 MonitorInfo: [XRandR 1.2] CRTC 2 has no outputs
2019/07/10 10:55:51.206 4713 **Please do not post TeamViewer IDs**39648 GX0 MonitorInfo: [XRandR 1.2] CRTC 3 has no outputs
2019/07/10 10:55:51.206 4713 **Please do not post TeamViewer IDs**39648 GX0 Virtual Desktop [0, 0, 3840, 1080]
2019/07/10 10:55:51.212 4713 **Please do not post TeamViewer IDs**39648 GX0!! ResourceLoader: loaded file '/opt/teamviewer/tv_bin/resources/TVResource_ru.so' version (4730) is not matching with application version (14.3.4730)
2019/07/10 10:55:51.212 4713 **Please do not post TeamViewer IDs**39648 GX0 Loaded language 'ru', using locale 'ru'
2019/07/10 10:55:51.212 4713 **Please do not post TeamViewer IDs**39648 GX0 InterProcessBase::SecureNetwork created
2019/07/10 10:55:51.213 4713 **Please do not post TeamViewer IDs**39648 GX0 AutoLogin::Login: enabled: 1
2019/07/10 10:55:51.213 4713 **Please do not post TeamViewer IDs**39648 GX0 AccountLoginStateMachine::Reset
2019/07/10 10:55:51.213 4713 **Please do not post TeamViewer IDs**39648 GX0!! ApplicationLookOfflineState::ApplicationAppearanceOfflineState: state not loaded
2019/07/10 10:55:51.213 4713 **Please do not post TeamViewer IDs**53440 GX0 InterProcessBase::StartTcpCommunicationInternal(): setting m_NetworkConnector to new TCP connector
2019/07/10 10:55:51.213 4713 **Please do not post TeamViewer IDs**53440 GX0 Opening local TCP connection to 127.0.0.1:5939, tcp?
2019/07/10 10:55:51.213 4713 **Please do not post TeamViewer IDs**02464 GX0 Local TCP connection established
2019/07/10 10:55:51.310 4713 **Please do not post TeamViewer IDs**95168 GX0 SettingsIPCReception receive a SYNCHRONISE Settings command : UserSettings
2019/07/10 10:55:51.311 4713 **Please do not post TeamViewer IDs**87872 GX0 Received Control_InitIPC_Response processtype=1
2019/07/10 10:55:51.311 4713 **Please do not post TeamViewer IDs**87872 GX0 Received Control_InitIPC_Response runningProcesses=3
2019/07/10 10:55:51.311 4713 **Please do not post TeamViewer IDs**87872 GX0 Control_InitIPC_Response: all processes 3 completely initialized
Start: 2019/07/10 10:55:51.311 (UTC+5:00)
Version: 14.3.4730
ID: 0
Loglevel: Info (100)
License: 10000
Server: master16.teamviewer.com
IC: **Please do not post TeamViewer IDs**
CPU: Intel(R) Core(TM) i5-7500 CPU @ 3.40GHz
CPU extensions: l9
OS: Lx Debian 10 buster (x86_64)
IP: 192.168.1.35
Proxy-Settings: Type=0 IP= User=
2019/07/10 10:55:51.319 4713 **Please do not post TeamViewer IDs**39648 GX0 SystemID m=1 s=1 94bbd798ec**Please do not post TeamViewer IDs**9a4356606f43
2019/07/10 10:55:51.323 4713 **Please do not post TeamViewer IDs**39648 GX0 DynamicPasswordUIModel::ShouldShowDynamicPassword(): dynPw=1 allowIncoming=1 id=0 ka=0 lanAllowed=0 lanOnly=0 networkState=1 showDynPwd=0
2019/07/10 10:55:51.323 4713 **Please do not post TeamViewer IDs**39648 GX0 DynamicPasswordUIModel::ShouldShowDynamicPassword(): dynPw=1 allowIncoming=1 id=0 ka=0 lanAllowed=0 lanOnly=0 networkState=1 showDynPwd=0
2019/07/10 10:55:51.323 4713 **Please do not post TeamViewer IDs**39648 GX0 DynamicPasswordUIModel::ShouldShowDynamicPassword(): dynPw=1 allowIncoming=1 id=0 ka=0 lanAllowed=0 lanOnly=0 networkState=1 showDynPwd=0
2019/07/10 10:55:51.697 4713 **Please do not post TeamViewer IDs**39648 GX0!! DecryptByteArray exception: StoredDataCipherAES: Invalid Ciphertext, error: "StreamTransformationFilter: invalid PKCS #7 block padding found", Errorcode=11
2019/07/10 10:55:51.697 4713 **Please do not post TeamViewer IDs**39648 GX0!! ApplicationLookOfflineState::ApplicationAppearanceOfflineState: state not loaded, Errorcode=11
2019/07/10 10:55:51.697 4713 **Please do not post TeamViewer IDs**39648 GX0 ManagerHolderStateMachine: Switching from None to NotReady
2019/07/10 10:55:51.698 4713 **Please do not post TeamViewer IDs**02464 GX0 ChatManager::ChatManager: created
2019/07/10 10:55:51.698 4713 **Please do not post TeamViewer IDs**02464 GX0 ChatManager::Factory: ChatManager created
2019/07/10 10:55:51.698 4713 **Please do not post TeamViewer IDs**02464 GX0 IncomingBetterChatCommandHandler::IncomingBetterChatCommandHandler: created
2019/07/10 10:55:51.698 4713 **Please do not post TeamViewer IDs**02464 GX0 IncomingCommandRegistration::Start: registering for ready state properties
2019/07/10 10:55:51.698 4713 **Please do not post TeamViewer IDs**39648 GX0 Initialised XFixes extension (base=87 error=140)
2019/07/10 10:55:55.588 4713 **Please do not post TeamViewer IDs**39648 GX0 DBusStatusNotifier: active [0/1] (4)
2019/07/10 10:56:34.169 4713 **Please do not post TeamViewer IDs**53440 GX0 XClipboard: RequestClipboard as TARGETS (512)
2019/07/10 10:56:34.173 4713 **Please do not post TeamViewer IDs**53440 GX0 XClipboard: RequestClipboard as text/html (583)
2019/07/10 10:56:34.173 4713 **Please do not post TeamViewer IDs**53440 GX0 XClipboard: RequestClipboard as UTF8_STRING (311)
2019/07/10 10:56:34.189 4713 **Please do not post TeamViewer IDs**53440 GX0 XClipboard: Got clipboard as 'text/html', size (n=244, c=244)
2019/07/10 10:56:34.189 4713 **Please do not post TeamViewer IDs**53440 GX0 XClipboard: Got clipboard as 'UTF8_STRING', size (n=30, c=60)
2019/07/10 10:57:26.518 4713 **Please do not post TeamViewer IDs**53440 GX0 XClipboard: RequestClipboard as TARGETS (512)
2019/07/10 10:57:26.525 4713 **Please do not post TeamViewer IDs**53440 GX0 XClipboard: RequestClipboard as UTF8_STRING (311)
2019/07/10 10:57:26.526 4713 **Please do not post TeamViewer IDs**53440 GX0 XClipboard: Got clipboard as 'UTF8_STRING', size (n=9, c=10)
2019/07/10 10:58:44.521 4713 **Please do not post TeamViewer IDs**53440 GX0 XClipboard: RequestClipboard as TARGETS (512)
2019/07/10 10:58:44.528 4713 **Please do not post TeamViewer IDs**53440 GX0 XClipboard: RequestClipboard as UTF8_STRING (311)
2019/07/10 10:58:44.544 4713 **Please do not post TeamViewer IDs**53440 GX0 XClipboard: Got clipboard as 'UTF8_STRING', size (n=37, c=74)
2019/07/10 10:59:20.259 4713 **Please do not post TeamViewer IDs**53440 GX0 XClipboard: RequestClipboard as TARGETS (512)
2019/07/10 10:59:20.263 4713 **Please do not post TeamViewer IDs**53440 GX0 XClipboard: RequestClipboard as UTF8_STRING (311)
2019/07/10 10:59:20.265 4713 **Please do not post TeamViewer IDs**53440 GX0 XClipboard: Got clipboard as 'UTF8_STRING', size (n=2981, c=5962)
2019/07/10 11:00:49.321 4713 **Please do not post TeamViewer IDs**53440 GX0 XClipboard: RequestClipboard as TARGETS (512)
2019/07/10 11:00:49.324 4713 **Please do not post TeamViewer IDs**53440 GX0 XClipboard: RequestClipboard as UTF8_STRING (311)
2019/07/10 11:00:49.326 4713 **Please do not post TeamViewer IDs**53440 GX0 XClipboard: Got clipboard as 'UTF8_STRING', size (n=12, c=24)
2019/07/10 11:01:03.840 4713 **Please do not post TeamViewer IDs**53440 GX0 XClipboard: RequestClipboard as TARGETS (512)
2019/07/10 11:01:03.842 4713 **Please do not post TeamViewer IDs**53440 GX0 XClipboard: RequestClipboard as UTF8_STRING (311)
2019/07/10 11:01:03.844 4713 **Please do not post TeamViewer IDs**53440 GX0 XClipboard: Got clipboard as 'UTF8_STRING', size (n=216, c=432)
2019/07/10 11:01:49.015 4713 **Please do not post TeamViewer IDs**53440 GX0 XClipboard: RequestClipboard as TARGETS (512)
2019/07/10 11:01:49.019 4713 **Please do not post TeamViewer IDs**53440 GX0 XClipboard: RequestClipboard as UTF8_STRING (311)
2019/07/10 11:01:49.026 4713 **Please do not post TeamViewer IDs**53440 GX0 XClipboard: Got clipboard as 'UTF8_STRING', size (n=25, c=50)
On windows machine in this network all works fine.
How can I solve this problem?