Plutonium

can you get in a discord call with us? jsut to see how it works we really dont know how to do the port and upnp even though its open

i understand that but i do not have the overlay of "friends list" and even if the built in works it says join session failed, I am trying to play black ops 2 zombies which is T6, my question and problem is the fact that the overlay sint there and when we do try to invite each other via the activision system it says "joining game session failed" i just need help

so me and my friend are trying to join eachother without doing a server, but when we both click f10 it only says server nothing else please help we did all the requirements like following each other. Please help A S A P