My tiktok app just got reset???

I just opened tiktok and it prompted me with all things that would show up when you first get the app. On top of that my fyp has been seemingly reset and I am now in light m0de. Can anyone explain why or how this happened and if I can fix it. I would really like my fyp back i’ve been building it for a long time. For context i was literally using it just fine 30 mins ago.