@KristieM 

Here is an article from Nintendo with how to set up the device to forward the ports (this is to give NAT A): https://en-americas-support.nintendo.com/app/answers/detail/a_id/22272/~/how-to-set-up-a-routers-port-forwarding-for-a-nintendo-switch-console

Here is how you would port forward in the Archer A7 router: https://www.tp-link.com/us/support/faq/1541/

According to Nintendo, you would port forward the entire range of ports.

So you should have:

Service Type > Nintendo

External Port > 1-65535

Internal IP > whatever the IP of the switch is

Internal Port > leave blank or 1-65535

Protocol > UDP