I'm playing with a friend on a server and the JEI doesn't show any recipe for the Empty Brass/Andesite Chunkloader. I looked into the mod itself and found the recipe how to craft it but nowhere was a sign of error. I tried this recipe but the mechanical crafters failed

We play Create Live 5 Skyblock where this issue occurs
Modloader is Forge 47.3.0
Minecraft Version 1.20.1

@hlysine I'm also having this issue on a 1.20.1 Fabric server. The mod shows up in the mod list, and works with crafting recipes and everything in a singleplayer world, but doesn't work at all in a multiplayer world.

Can you share the server logs?

If you can't craft the items at all, the mod is most likely not installed properly. Please check that you have the jar file in the right place and that it shows up in the mod menu.

I found the problem: In a server_script file for KubeJS the recipes of the Chunkloaders were removed