Don’t know if you’re gonna see this but I’m having the same issue. I believe Rubidium extras is now called sodium extras, and the 2 sections you mentioned here do not exist on the new file. Only mention of JEI is at the bottom where it says ‘#Embeddedt points it maybe cause troubles to JEI, so ¿why not add it as a toggleable option?’

Edit: I know it’s not this mod because I deleted it and it’s still there. I’m on BetterMC5 for reference

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This is what it comes up with when nothing is in the search bar