Videos not eligible for FYP

I'm having issues with my tiktok account and I have no idea why and I'm distraught 😭 I've been doing super well and then all of a suddenly my last few videos have been stuck in this weird "post is processing" place or this. I've been building a platform and I have no idea what to do. I'm not posting anything unlike what I've posted before, I post stuff about animated TV shows, nothing sexual or cursing. I'm so upset idk what to do.