Hi obiekt628,
First thing I noticed was you are using a Object to set a Variable for Game Mode, Game State, and Player Controller. Is there a reason you aren’t using the pre-made Get nodes for these.
Also, I’m having trouble reproducing your issue from these files alone, it seems you are referencing a function library. Could we get a link to download the function library or the project as a whole? Feel free to Private Message me on the Forums if you’re not comfortable posting it here.