MiFirm
From 2021, Xiaomi do not allow users check Lost or Clean status when checking Xiaomi lock status
So you can check the status of mi account Clean or Lost by this solution:
Turn on your device, connect to a wifi network or insert a SIM card which have data network. Wait 10-60s or you can reboot the phone for faster sync
After that, check the this lock screen to see if there are any phone number, email or messenger apprear
If your lock screen still like this, your device lock is CLEAN
If there are any phone number, email or messenger, your device lock is LOST
In some case, there are no phone number or email but you can see the text "This device is lost". Sure, this is a lost device
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