Why can't Tik Tok log in with WeChat?

Authorization problem. Tik Tok can't log in with WeChat, because Tik Tok is not bound to WeChat. The steps to log in to Tik Tok with WeChat are as follows:

1. On the login page of Tik Tok, enter your mobile phone number and click "Get SMS Verification Code", then enter the verification code and click "Login". After logging in to Tik Tok, on the "Me" page, click the "three" symbol in the upper right corner, and then click "Settings".

2. On the settings page, click "Account and Security", then click "Third Party Account Binding", then select "WeChat", click "Binding", and log off after binding WeChat.

3. Return to the login home page. Click "Login by Other Means" on the login homepage, and click "Login by WeChat" in the pop-up box to log in to Tik Tok with WeChat.