My second player can move but can't be launched

I’m working on a character blueprint on a multiplayer game.

I’d like to customize the jump method so the character is “launched”.

First player can totally take it ; but other players can’t. There’s animation, even motion blur ! But no launch.

Here’s my blueprint cap ; where’s the issue ?

Multiyplayer? Sounds like you should use the Controller Rotation instead, but I’m just stabbing in the dark <3