Advanced Tomato on R7000 - Denon receiver no connection

As in the subject I have AdvancedTomato installed on my R7000 router. I can't get my Denon receiver, X3200W to connect. When I go into setup to do this my receiver doesn't see those wifi connections, it only shows a Roku connection and one wifi connection. It won't connet to the wifi connection (pre Adv Tomo) and the roku it asks for a password...I don't even know it it is showing my roku.

I'd like to be able to get a connection to my Denon receiver. I'm not sure which of the 3 router firmware's are the best for my R7000, DD-WRT, OPENWRT or Tomato? Need some help in choosing and which one will allow me to add devices' to the easiest. I installed AdvancedTomato and can uninstall it, I just don't want to have to do a lot of research to add devices etc.

Thanks in advance,

Pat