i put the mod in stoneblock 3 and doesnt work

3.9.0 isn't supposed to support this...
4.0.0+ added support for rei

I don't think you're supposed to be able to do that. Normally you would click on an item in JEI and drag it into the calculator.

Was there a feature like that before?

I have issues with JEC in 1.18.2 too.
Modpack: Stoneblock 3, versino 1.2.1
JEC version: JustEnoughCalculation-1.18.2-3.9.0

I cannot add receipt into calculator from REI.
I've dragged desired item to calculator. Then in ingredients tab I click on the item:

Receipes list is opened, as it should be.
But the "+" button in the receipe is red and it says either "unable to move item to a 2x2 grid" or "not enough materials". It seems like it doesn't detect REI context or something, and behaves like in the normal user inventory.

Also, weird thing that I cannot go back from REI into calculator. I press Escape button - and it goes into inventory, not into calculator.

I still can add receipes manually by hand-picking all ingredients, though - but it's much longer, obviously.

Please please fix this 🙏