I can't payment in tiktok whats a problam?

We'll need more information before anyone can do more than guess. How are you trying to make this payment, through Apple's App Store as an in-app purchase or directly from Tik Tok? If it's through an in-app purchase, what exactly happens when you try to purchase?

If it's directly from Tik Tok, you'll need to contact them for assistance.

Regards.