The web client isn't connecting, sometimes it gives session-limit error, even though this is literally the only session…
… other times it says the Main tab was closed (it is surely not)…
… but still other times, it just stays stuck on "Connection not ready" and never even shows a error message…
… it seems like the hand-off between the main web.teamviewer.com/devices panel and the web.teamviewer.com/Connect is failing.
The TeamViewer on remote device is fully up-to-date, and I can connect to it via Mobile… This problem is specifically with the Web client.