Error in Super Smash Bros Multiplayer

Issue:
I’m trying to play Multiplayer with a friend, we try in a server everything okay with that, we choose our character, the stage, we start the game, 3…2…1… go! and the contest finish after the “go!” and our characters make aplauses…

the Server is Europe (Fr) and our games are an Europe Version…
Can we have a solution to play Super Smash multiplayer in the citra normally?