

I use Comaps and it’s works fine for me. My only thought is maybe your tts software? I downloaded comaps and google tts (internet permission removed) both from the play store.
You could also try to enable logging in comaps and see if that turns anything up
Your carrier (T-Mobile, Verizon, etc) has locked your phone to 1: only use their service and 2: only use stock pixel os
As far as I know there’s nothing you can do except wait until it is unlocked from the carrier, which usually happens after some period of time or until the phone is paid off.
I also don’t know if this will actually allow you to unlock your bootloader but the note on the screen suggests that it would