1. Although the password account is correct, it is case-insensitive and cannot be logged in;
2. The network situation is not good, and the transmission and output packets are lost after entering the account password or the network situation is not good;
3. If the platform is maintained or changed, you may not be able to log in;
Let's rule out specific reasons first. If it still can't be solved, it is recommended that customer service solve it.