Many thanks to Dishita for his great work and recommendation to try the beta version of the desktop app, since the add-on was banned from YT a month ago.
I didn't use all the features yet, but the desktop app seems to work fine on my Mac, no issue encountered so far.
I would like also to underline that the add-on was working good with Firefox as well until it was banned from YT, no matter if you made donation or not.
I'm looking forward to the official release of the desktop app.

A few words to the users who are blaming Dishita that the add-on doesn't work.
TRY THE DESKTOP APP