Problem account micloud xiaomi Mi5

I have a mi5 device, with the micloud account activated but I could not get it with any of the methods.
In fastboot mode, the program does but the cell phone is still locked.
In the option which is also not right.
I tested it in MUIU 7 and MIUI 8.
When I write the firmware V7.5.2.0.MAAMIDE_20160523.0000.23_6.0_global I use the phone normally, but I can not delete the MIcloud account.