Volumio IOS App Set Up

Downloaded Volumio IOS app. I get the player’s name (Volumio) and host ip address, but I do not know how to determine the port. How do I figure out the port? Thanks.

Somehow I got it to work. Volumio was not seeing the 5GH output of my router, only the 2.4GH. No idea why. The port number did not seem to matter. I just typed on in there.