Error "Couldn't check device security info" when trying to log into my Mi account

[elvio_galarga]

Hello there, I want to install lineageOS onto my Note 7 Pro, for that I have to log onto my Mi account and use the Mi Unblock app to unlock the bootloader, the problem is that when I hit the "Sign in" the error mentioned on the title appears. I tried resetting from factory and logging from the setup screen, but the same error appears. Is this a temporal error? If not, is there any other way of unlocking the bootloader? Thanks!