Chuppy

So we invited my parents over for dinner. My mom as a Galaxy 9 android phone. The Netduma R1 remembered her phone from over 2 years ago. It also signed her in, she did not need to input the password. And then blocked her from using wifi calling also. This never happened before for her phone either. At this point the only really big difference was the 3.0.207 update. And also some minor settings in the R1 itself. Please help.

We need wifi calling turned on for our android phones to work in our area. When I switched from our ISP's router to the R1for better gaming, the cell phones would not make phone calls with wifi calling turned on. I assume it's a setting in the R1, or the phones are communicating wrong with the router. With my limited knowledge of both I will need all the advice you can give. Thanks