[Rossi D]

Já jsem Tvůj problém měl po automatické aktualizaci na v.5.2.2. také, YT chtělo dvoufázové ověření a obsah poté nefungoval, restart Kodi → vše OK ... 

edit, někdo to na stránkách autora řeší také:

Just a dumb question. When I attempt to log back in using my personal keys, it fails on the first log in. I have checked how I have entered the keys, made sure they were entered properly, removed the .apps.googleusercontent.com from my API ID, deleted and reinstalled the plugin from my system, and I still am having problems getting the keys to work. Any ideas?

EDIT SOLVED I managed to get it running properly on my Windows machine. So I copied settings.xml from there to my main Kodi box, and now it works great! I must have been mis-entering something. Thank you for your directions and time!