Whenever I try to craft (for example : the mahogany chest) the crafting recipe does not show up and If i want it added to my world I need to use creative. The vanilla block versions work but the modded doesn't. I play on 1.15.2.

Install the datapack that you can find undee additional files x)

oops haha.. do i just put the additional files in the mods folder?

in your world folder under datapacks :) you can check in-game if it worked with "/datapack list" i think

do we just copy-paste ? because that's what i did but still can't see recipes.

Using Biomes O' Plenty btw.

just put the zip into the datapack folder

Ohhh silly me! I was extracting then pasting, tysm!