TikTok doesn't show correct origin of my song

Hello im pretty new on TikTok, i am an artist trying to market my music

Usually when i release a song i also post a video of me singing to it (i take the original wav and remove the vocals and then sing along)

I did this recently and usually the original track spins at the bottom, but on my video some other account spins down there as if it was their original music? Is this a bug? I am the original creator of both music and video

How my video looks https://imgur.com/a/mEeyCK2 The other account https://imgur.com/a/8Abj7uy Said video https://vm.tiktok.com/ZNdrjoXkU/