Why can't WeChat log in to Douban?

System error, watercress restriction and other reasons.

1. System error: Unable to log in due to Douban or WeChat system problems. In this case, the user can reopen the application or try to log in again later.

2. Douban restriction: Douban website has restrictions when logging in with WeChat, for example, it can only be accessed through WeChat client, and the mobile phone number needs to be bound. Failure to meet these conditions will result in failure to log in via WeChat.