Our Android phones don't like the R1.

[Chuppy]

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