I never registered my Mi A3 cell phone and now the phone is dead after trying to install a new rom due to wifi problems.

I discovered that the phone can be flashed again in EDL mode using the Mi Flash Pro tool. When doing so the flashing starts but aks after a few seconds to login.

Because I have no login data I can not proceed the flashing. Because the phone is dead I can not register it also.

Does somebody knows how to proceed to get the authentication?