This situation is due to network congestion, which leads to stopping jumping to the sign-in page and unable to sign in. It is suggested to exit the sign-in page of WeChat, uninstall and reinstall WeChat, and then enter the sign-in page to sign in again.

Sign-in means to sign or write the word "arrived" in the designated book, indicating that I have arrived. That is to say, by recording, I show that I have participated in or participated in an activity. Mostly used for attending meetings or going to work.