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.
Although I had rebooted my system earlier today, I decided to reboot again and like magic I can now sign-in. .... go figure....
I had the same problem, I restarted the teamviewerd service and it cleared up.
> service teamviewerd restart
Redirecting to /bin/systemctl restart teamviewerd.service