It's already been pointed out, but someone probably reported your book for its cover or the banner / thumbnails. I tried finding your novel, but looks like you already deleted it.
For future reference, in case you ever decided to share your stories here again, be sure to credit your cover artist (even if YOU drew it yourself) in the description of your books. Knowing who the artist is means people can go check out their portfolios, and that'll go a long way in clearing up whether the cover is AI or not.
If you used Canva to make your cover, I've been told that Canva itself has AI assets now. So you may have inadvertently used some AI without even realizing it.
Or, if you commissioned someone to draw the cover for you... that doesn't mean your cover wasn't AI. There are plenty of AI users out there more than happy to scam people and pretend they're actually drawing you custom artwork when in fact they're just feeding your request into the machine. 