Not sure if this is the right repo, but trying Project Ozone 2.3.0 Without HQM, I can unlock new quests, but can't click the claim rewards button. And no, my inventory is not full.

This may have been fixed with Project Ozone 2.4.0. Please update your pack and try again. If you still run into issues let me and the author of Project Ozone 2: Reloaded know so it can be investigated further.