While REI it's self supports JEI plugins it seems this mod isn't properly hooking into it or something along those lines so nothing from the JEI support from this mod displays. I would normally only use JEI but certain fabric mods such as Hephaestus only support REI and it sucks to now have to choose between one or the other when making a Cobblemon modpack.

I have been verifying plugin compatibility with EMI. I can take a look at REI but it hasn't been a priority.