Can't pair my 945 to the phone (Google Pixel 8a). that worked before.

Can't pair my 945 to my phone (Google Pixel 8a) that worked normally for over a year.
First, my 945 frequently lost connection to the phone.
I tried to fix this, unpaired my 945 and can't paired it again.
Did a factory reset on 945.
Deleted Garmin Connect  App (and all the other apps).
Nothing worked.
Garmin Connect sees the 945, gets paring code but the pairing fails.
Same happens after retry.
Seems like that the connection is doping.