Just a simple thing, but there are two int parameters for SoulBinder.addRecipe(), and the GitHub documentation says that the first one corresponds to xp and the second to energyCost, when it's actually the other way around.

For example:
SoulBinder.addRecipe(<enderio:item_material:53>, <enderio:item_material:55>, ["minecraft:villager"], 100000, 4);
https://i.imgur.com/SmsprEL.png