At least for the current version of the Snad mod for 1.18.2 (Snad-1.18.2-1.22.04.15a), Snad works, but not Suol Snad. Checking the config (Common/src/main/resources/data/botanypots/recipes/snad/soil/soul_snad.json) it refers to snad:soul_snad instead of snad:suol_snad. Changing to the latter via datapack allows it to work.

Thanks for letting me know about this. There are a few different versions of the Snad mod floating around by different authors and it looks like they're using different item IDs.

This has now been fixed in 8.1.31. Support for both snad mods has been maintained.