My problem has also been solved. Thank you so much.You didn't specify which Mond skin you're using and from where you got it, so check this rewritten Mond skin, maybe it solves your problem:
https://forum.rainmeter.net/viewtopic.php?t=42042
https://github.com/reisir/mondtholomew
I personally don't use the skin or the WebNowPlaying plugin, but based on the skin and the plugin description, the YT part should be covered.
Statistics: Posted by AidenWalker — Yesterday, 2:51 pm