I bought a Moto G (unsure the generation but it was a 2022 model) for my father and had it activated on the Verizon network. It worked great until a few weeks ago. Now he can't make voice calls, and when I call him voice or video, I get an "Invalid Number" error message. However, we figured out he can make video calls to me! It's urgent that he's able to make and receive calls on this phone right away. He uses it in his home connected to wifi as he doesn't get much of a signal out there....it is currently connected to wifi, and it isn't on airplane mode. What could explain this?