The elevator blocks from the Elevator Mod specifically require normal ender pearls although most other recipes in the pack that use ender pearls accept any variation of them from Enderman Overhaul.

Elevator recipe:

Attempt to craft the recipe with an ender pearl variant (specifically the warped pearl):

Other recipe that uses ender pearls:

I also noticed that a couple other recipes, including the dimensional walls from DimStorage and the teleport rail from UsefulRailroads, also have this issue.

EDIT: Vanilla recipes, including eyes of ender, also have this issue.

Yeah, I just wanted to bring this inconsistency to your guys' attention as I doubt it was intentional and the warped forest is at the very least my early game go-to location for ender pearls and the endermen there only drop warped pearls.

As for the ender pearls, I ended up just trading with villagers to get them but thanks for the suggestion.

So to clarify here, the overhaul pearls have the forge:ender_pearls tag so they work in any recipies that look for that (including the last recipe screenshot in OP, if that doesn't work then there's something else going on too) instead of just the minecraft:ender_pearl. I think that the fix is simply using KubeJS to unify all the recipies to looking for the tag instead of the item. Temporary fix in the meantime if you are in single player or on your own server is to datapack in a recipe that turns any forge:ender_pearls into a minecraft:ender_pearl

edit: alternatively if you don't have access or don't feel comfortable datapacking that in, you can also use EnderIO to turn them into normal pearls at a 1:1 ratio by using the sag mill on them then putting the output into one of the EnderIO smelters.