This happened to me, I used the Xiaomi flashing tool to go back to stock(make sure you dont have lock enabled on the bottom left, I booted that image up once and then started the whole process as listed per xiaomi.eu, and it worked.
Hello I had this happen to me and had to use the MIUI flashing tool, to put back to global. then I followed the instructions to go to the Xiaomi.eu rom. (maybe just me but when I went to global I did a full boot).
So what specifically isnt working, my backup is working on the items i choose like recorder, calendar, wi-fi? Messages don't on mine cause i can't get past the activate