HELP - Waves not finding signal

Day 1 … selected a favorite and Waves said (Oops or UhOh)
Day 2 & # Waves able to show my location but still says cannot find signal .

I have been ill for 9 or 10 weeks and not driven. Meanwhile, I have a new internet service and that was changed on my iphone. Is there some setting that has gotten changed that impace WAZE? Outside the house wouldn’t WAZE automatically use my AT&T service?

Confused.

This is WAVES forum, not WAZE.