in need of instructions

Wow, if ever there was an app that needs instructions, this is it. (And it SHOULD be so easy it doesnt need instructions.) There is NO information or help button on the app. Even when I have two devices on the same WiFi network the little "status" light is red. Cant for the LIFE OF ME figure out how to make it work. I only give it two stars because other reviews seem to indicate that when you CAN figure out how to make it work, it works well.
Make it obvious how to make it work and Ill give it more stars.

Mfiedler about Walkie Talkie Pro