Local MP - CreatePlayer not working; everything controls Player 0

Hello Unreal-friends,

I wanna have two players locally (shared screen). Got the shared screen already - but PlayerCreate just won’t give me control over the second player spawned.

Of course Player 0 spawns automatically, and Player 1 spawns in as well - I just can’t control him and I’m having the feeling I’m missing something obvious here. Placed in my level are two PlayerStart’s. No errors/warnings. I tried with Switch Pro (with Steam controller emulation) and XBOX ONE controllers, no luck.

My level BP:

Every help to grasp is appreciated!

Of course the second I make a thread for once I got it after 6 hours…

It was this.