Problem to seeing my friend in Pokemon

Hello, I have a problem with the server of Citra. When I go in a public or private room with my friends, I see them on the room but not in the pokemon game. I don’t understand why and I have try some things ^^ !

Somebody has any answer ? Thank you !

Both of you should regenerate the Console ID in Emulation - Configure - System

Thank you very much guy ! Love you :DDDDD