I see now.
The first version of the song was detected by AI as an unoriginal/stolen song, and therefore it was taken down.
AI can’t detect modified versions of songs, that’s why the modified version of the song got past moderation.
That’s what I was about to say.
Now that you have it uploaded, you can add it to studio and re-pitch it and speed it up using the PlaybackSpeed
property. (Yes, this property controls both, the pitch and speed of an audio)