Mi 11 ultra unlock bootloader with replaced motherboard

[K9vis]

I want to unlock the bootloader of the Mi 11 Ultra, its motherboard was changed. I tried the official way, which is through Mi Unlock and I couldn't, it says that the cell phone is not registered on the server or something like that, any ideas?

edit: I did some research and saw that I have the global ROM on a Chinese motherboard, which is why I got this error. How do I put the Chinese ROM on a blocked cell phone?