phoenix flight sim can't see pilots

[hoghead5150]

so my brother and i both have the phoenix v4 sim and when we try to go to the online sessions we are having a hard time. sometimes it won't let me log in to some sessions, sometimes it will. this isn't that bad, but the worst is when my brother is in a session, and i log into that session, we can't see each other. we can see everybody else, and they can see us, but we can't fly with each other.

any ideas??

we live in the same town, probably have the same internet provider if that matters.