Yesterday TV was working today I cannot signin, the Signin button is grayed out. I removed the email address and PW, reentered both still I cannot signin.
Here's a workaround (that worked for me). Instead of "log in" I pressed "Enter". Working so far/\.
I had the same problem, I restarted the teamviewerd service and it cleared up.
> service teamviewerd restartRedirecting to /bin/systemctl restart teamviewerd.service
Although I had rebooted my system earlier today, I decided to reboot again and like magic I can now sign-in. .... go figure....