If you are reading this, do not turn in the quest for a paragon rep cache, it's being nerfed:
https://www.wowhead.com/news=292432/...-quest-turn-in
Instead of opening the cache, you will directly receive the rewards from a quest turn-in. All caches you have in your bags right now will not contain AP as of the patch on tuesday.
Standard procedure of Fun Detected -> Fun Removed.
I had a feeling they would do this, but i just wish they hadn't waited until the last minute after people have been farming rep this whole time.