Pretty much the subject line. uBO has successfully blocked the nag screen enough times that I can’t play anything at this point. No preview loads, and the play button serves no function. I’d really prefer not to have to find content on YT, copy the URL and use Piped/Invidious, but this ongoing escalation is steeling my resolve to screw Google.
OP most likely is not following the instructions laid out at the uBlock subreddit. Probably a conflict with another adblocker.