Installed it to use with Youtube. But I can't figure out how it is supposed to work and there is no guide. Maybe it is simply broken.

not working at all

its useless it dosent work use waterfox if u want picture in picture

Does not work on disney+

not working

Doesn't work in Firefox above v.116

niestety nie działa, ikona jest szara

It is greyed out on any site including youtube. Not sure if it works with the latest Firefox but I couldn't get it working giving it all permissions.