YouTube Ads Showing

For some reason, despite having W2G +PLUS, and YouTube Premium, I’m getting an ad at the bottom of my videos. I don’t believe this has ever been an issue in the past for me, so I’d like to know if I can fix it.

If it is expected and ordinary however, this’d become a suggestion, to be able to link YouTube accounts to W2G in order to avoid pesky ads if possible.