Question
... We made custom recipes using our custom datapack for this mod and the custom recipe we made dont show up or work on server, but work on single player

Packed Up doesn't do anything weird with recipes, so they should work.
Do other recipes not involving Packed Up work?

Yes, The rest of our custom recipes work fine

Could you send me the datapack or at least the recipe file, so I can have a look at it?

packedup.zip

fixed after we updated our pack