Context in discord

Also JEI has no information on requirements, maybe the mod author should just add ALL genes to the book and include the requirements for them??
Maybe add pages for More Hearts II, Regen IV, and Haste II and so on??

Any pages that are missing obviously aren't missing on purpose. Make an issue noting that they're missing.

There's currently no jei support because the jei api isn't great to work with, but I'm working on it (as a low priority).

Gene requirements aren't in either because those are datapackable. However, I'm reconsidering if that's a good enough reason to keep it out. You should make another issue for that, so I remember to change it

Also JEI has no information on requirements, maybe the mod author should just add ALL genes to the book and include the requirements for them??
Maybe add pages for More Hearts II, Regen IV, and Haste II and so on??

I was unable to replicate this.

Additionally, DizzyDJW apparently did not feel that missing book pages was actually worth making an issue over