I just installed the mod, but the item doesn't seem to be craftable. EMI also doesn't show a recipe. Using the item seems to function, it's just that the recipe is missing.

@cplir-c Thank you, but recipe folder is also wrong (should be in data/ instead of assets/)
I'll fix them in next version

This looks to be due to the recipe using the old mod ID for AE2: "appliedenergistics2" instead of "ae2":

Recipe used in BetterP2P 1.20
Mod ID for AE2 fabric 1.20.1

Ah, seems like a fairly straightforward fix then.