Same problem, it asks for the password when you start twrp and it always pops up the message that the password is incorrect, if we remove the password nothing appears in the storage
After unlocking bootloader , install Xiaomi EU and the whole process is done correctly, but it goes over and over again in fastboot mode, I have no way to get out of fastboot mode, I used Windows for the installation MI11 ULTRA I was in the latest Chinese update