Resxt that doesnt work i added my friend and when he or i go to join eachother it just loads for a second and then says unable to join game session

i try to join a server and i click connect or double click on it and it says joining game session for about 2 seconds then goes away and nothing happens any fix?

Any help??? ive tried everything

@Mr-Android

me lon#2687

Dss0 my discord is me lon#2607

I got perma banned is there any way i can appeal