Not all quests will grant reputation.

I was able to spawn the elite mob and got the key, but I cannot find the chest

What to do if a second character doesn't have all soulbinds unlocked after unlocking them on another character

Information on Stimpacks in StarCraft II

Information on why your purchase may not have been discounted.

Information on why completing an Island Expedition may not grant any reward

Information about how upgrade Conduit items works, and why you may not have received a Conduit upgrade when using one.

Information about why you may not receive credit towards the "Last Hurrah: Zaralek Caverns and Time Rifts" quest

What to do if you used the Catalyst to convert the wrong item

This is about the refund of the classic game (Diablo II, Diablo II: Lord of Destruction) that Blizzard released in the past.