Een antwoord is niet meer nodig want ik heb het volgende bericht gehad van Xaomi Global:
If you failed to log into Mi account after entering password, please check the troubleshooting steps:
1. Please visit official website on a computer by referring to https://id.mi.com. If you fail to log in, then the password is not correct;
2. Please check whether you have flashed the mobile phone or prohibit the operation of "My Xiaomi" through third-party security/assistant software with higher authority. If so, please log in https://us.i.mi.com and select "All Devices" in "Find Phone", fi