1. Wrong mobile phone number: The most common reason why you can't log in is that you entered the wrong mobile phone number. Make sure that the registered mobile phone number is correct when logging in.
2. The enterprise is not certified: the enterprise has not passed the WeChat certification and cannot board the ship. You need to make sure that your company has been certified on corporate WeChat.
3. Uninvited: The company has been certified and has not been invited. Users need to make sure that they have been invited to their enterprise.