Hearts of Iron IV

Hearts of Iron IV

Equestria at War
I can't play multiplayer with my friends
I instaled base game, buy month subscription, downloaded Equestria at war mod, music mod for modification and started the game. Mod is working, but my friends can't conect to each other. In my case i can't even see my ID when create server. In case of my friends, when we try to connect by ID, it writes "time to conection is out" (or something like it).

Any sugestions?