AI illustrations rejection rate

Hello! I noticed that almost 50% of all AI generated illustrations are now being rejected. I do not understand the reason since I draw to make them perfect and spend a notable amount of time to correct them and then upscale with my custom made upscaler. And I find it strange that literally random illustrations from one collections were accepted and others not, I did not have any rejections untill it started 2 days ago. What can possibly be wrong? I need some feedback to make my illustrations better for everyone! Maybe it's upscaler artifacts that become visible after x4 upscale? Or moderator doesn't like tabby cats? 🙂