Yesterday I was able to connect via this same network & laptop but today. I get message that Teamviewer is not ready.
I can still connect over Android phone but the small screen makes near useless. The Android phone uses AVAST VPN if that matters.
The laptop is using Norton 360. No VPN but it does protect from network intrusion. Disabling Norton Smart Firewall doesn't help.
I can also chat via Teamviewer web interface.