The mod allows me to craft everything other than the skulk sensor which im not sure why. I have looked at the recipe many times and tried it. It doesn't work.

Oh, it worked this time! I think I know why know, I had another datapack installed which also adds a craftable skulk sensor since I couldn't find a recipe on the RUI mod. I am sorry if this "bug" wasted you're time. I wasn't sure but thank you for providing answers and help though!

Hey!
Are you sure you use 2 twisting vines, 2 warped wart blocks and 2 crying obsidians? For me the recipe works.
If it still doesn't work, feel free to reply.

Hey!
Are you sure you use 2 twisting vines, 2 warped wart blocks and 2 crying obsidians? For me the recipe works.
If it still doesn't work, feel free to reply.

Yeah I used the recipe that the image showed, every recipe worked except the skulk sensor though.

I did that recipe but it didn't work. Is it because I use 1.17.1 or is it supposed to work on that aswell?

Hu? That's very strange. I tried on 1.17 and 1.17.1 and it works for me.
Do you use the mod in a modpack? Do you use Roughly Enough Items? With rei you should be able to see the recipe.
Maybe you can take some screenshots and tell some more details?

I'm not sure. The Rei mod didn't show me the crafting recipes for any of the items of the mod. It may be a glitch though. I'm not sure i'm gonna test it tomorrow again to see.