Hello Apple, according to Tik Tok, it can now be used in the United States but it won

Hello Apple, according to Tik Tok, it can now be used in the United States but it won't let me because I deleted it and when I wanted to download it again it wouldn't let me and I'm from Mazatlán, would you help me? It doesn't seem fair to me and other people that due to a simple mistake we can no longer use tik tok, so would you help me and all the other people? please!