1. Call the customer service number of massive open online courses (010-585810/0) to explain the situation to the customer service staff, who will help restore the account.

2, the phone can't get through, you can call many times, sometimes it will be busy.

None of the above methods can solve the problem. You can use Netease Great God APP, enter me, account treasure chest and account repair, enter the mobile phone number to be repaired, and then prepare a new mobile phone number (Netease APP has not been registered yet), provide double-sided ID card and facial recognition, and submit an application.

4. If you still can't recover, you can contact the customer service email of massive open online courses, describe the problem in detail, and get help.