2. Check whether the server is under maintenance. The server will be overhauled regularly, and you can't log in during this period. So you need to know the maintenance time of the server and allocate time to avoid the maintenance period.
3, consult the administrator, contact the corresponding server administrator in time, to understand the specific situation.
4. Clean up the cache with a mobile phone housekeeper or a computer housekeeper to solve the problem of too many caches.
5. Check your own equipment problems, such as too many programs running in the background and outdated equipment.
6. Check whether your account password is correct. If it is not correct, you cannot log in.