Installed Mod "Masters RPG 2018" doesn't work!

Game Version: 101.101.335209.0 4667120
Platform: Steam

Issue:

When I installed the mod(Masters RPG 2018) it shows a exclamation mark besides the mod and I can’t select it as a scenario when I open a new lobby. I was able to play the mod before but since the few last updates it somehow broke eventhough other people are still able to open lobbies using the mod.
I already tried to fix it with answers I found in another thread concerning a similar problem, like opening the Xbox Comanion app or verifying the game files on Steam but none of them worked.

Reproduction Steps:

  1. Downloading the mod: Masters RPG 2018
  2. Try to find the mod in your custom scenario folder