Niagara custom VFX not showing in game

I am trying to create some custom VFX.

They are visible and they work fine in UEFN but they don’t appear in the game.

Any idea how to fix this?

@Dr.Joske Thank you for your report! Can you please re-post using the “New Issue” option on the Issues and Bug Reporting forums? Posts with this feature are connected directly into our development team so we can quickly get to them!For more information, such as how to get the reference ID, please check out the article here: https://create.fortnite.com/news/using-the-creative-and-uefn-bug-reporting-form

I found out that this two modules are causing problem:

Initialize Mesh Reproduction Sprite

Update Mesh Reproduction Sprite