TeamViewer 14.0.14770 fails to register (CentOS 7.6)

Hi All,  as a Linux sysadmin I am using TV but find dificulties to set it up on CentOS

On a Linux CentOS machine after intsllation teamviewer setup fails 

• OS : CentOS Linux release 7.6.1810 (Core)
• GUI: Gnome 3.28.2 (gnome-classic) 
• firewall ports opened in both directions : ports: 80/tcp 443/tcp 5948/tcp 22/tcp 5900-5910/tcp 44996/tcp 5948/udp 5900-5910/udp
• SELINUX disabled
• DNS resolution works toward master1.teamviewer.com - master6.teamviewer.com

 /var/log/teamviewer14/TeamViewer14_Logfile.log

[Logfile as been removed]

please let me know if you have any hint what could cause this issue.

Zoltán