Version 1.16.5-2.2.11
Modpack: Enigmatica 6 expert
Right-clicking the curator villager with a relic doesn't work (he makes the 'no' sound)
Throwing the relic near the curator makes the curator look at it but nothing more.

Do you have mobgriefing off? Like piglins in vanilla I believe they might not be able to pick up items if that game rule is changed.

https://atum.fandom.com/wiki/Curator
I just edited it this morning to correct this error and someone reverted my change.

Just checking there's another wiki out there that's not maintained by us.

I made the same change you made again, we'll see if it takes. I might have to yell at someone haha.

Yup. MobGriefing False prevents bartering with Curator as well...
Would be nice to be able to barter with a right-click on him like suggested (wrongly) in the Wiki.

Which wiki?

Working as intended, following vanilla standards.