2. Confirm whether the account number and password are entered incorrectly (pay attention to case sensitivity).
3. Eliminate the server anomaly and try again by changing the time period.
4. Check whether the account is abnormal, and try to replace other equipment or consult the customer service of the software party.
5. After backing up the data, try to uninstall and reinstall the software. The above is the treatment method that Yu Huijia can't land.