WiFi Calling stopped working on only 2 of our 3 phones


This morning 2 out of the three iphones on our account stopped being able to use WiFi Calling from our home wifi. 

My Xs Max and my 8plus both stopped working, but my husbands Xs Max works fine still and my cruddy tmobile work phone (iphone 7) works fine. 

I've tried all the resetting- Reset Network Settings, and a full factory reset on both phones. Still not working. 

I called Verizon Tech support and they were stumped, and forwarded the issue on to their network people. I went to the verizon store and since the wifi calling worked FINE on their wifi in the store they couldn't help me either. 

I don't know what to do. I can't have these phones not able to work on Wifi Calling, we live in a rural area and we don't have good cell signal. I work from home and I DEPEND on wifi calling to be able to do my job. 


HELP HELP HELP please help.