Unreal Engine 5 - missing BP and other

I make a mini game with just 2 lvl for Windows.

I have a GEM item that you collect . After collecting all of them a green door apear and you can go to next lvl .
If i play the game in UE5 everything works. If i export the game for windows, GEM counter and BP are missing.
I mean if you take just 1 gem the door goes green. If you hit an obstacle and die, game freez.
This is happening if i export the game. Everything is working if i play the game in UE5…