Router Won't Connect to Online Play for Nintendo Switch

Hello everyone! 

I am in desperate need of help. I recently bought a Nintendo Switch and am trying to access online play. I always get an error message when I try to access online play. The error typically says something about my NAT type causing the issue. My T-Mobile router (Arcadyan KVD21) seems to have NAT type B. I was told that I could just access my router settings on my computer and enable UPnP. However, when I type in my IP address I do not see any router settings to change. All I see is connection status/quality and some gateway information. Basically all I see is exactly what is in the T-mobile home internet app. Does anyone know how to fix this issue? Should I just get rid of T-Mobile home internet and get something else if I want to play games online?