Dear Darkloud1989,
thank you for your investigation! I just packaged the current marketplace-plugin for distribution in UE4.22 and the Game runs fine on PC with a Nebula-Level in play. So it’s hard to say where the issue comes from. Did you make any changes in the level or blueprints? Can you send over any project/build to get the problem reproduced?
Nevertheless I will send you a pm with the WIP-version of the plugin in hope that the issue is then be solved xD