I Finished the Quest and Got No Items
Items May Be in Your Stash
If your inventory is full, items will be delivered to your overflow inventory, or stash. Items may experience a delay when being delivered to your stash, and may not immediately appear.
Selling or using items in your inventory will clear up space for you to claim items in the stash.
I Am Missing Completion or Mastery Rewards
Completion and mastery reward progress can be viewed by tapping on the chests displayed on each act or quest. Quest completion and mastery rewards are only granted once. Items granted this way may also be delivered to your stash.
These rewards require that you simply run the map to completion once.
These rewards require that you collect every quest star on the map. This generally requires multiple playthroughs. You must complete the map each run in order for any stars to count towards mastery.
If you have not received your mastery rewards, you may still be missing a quest star on the quest map.
I Did Not Finish the Quest
XP motes, crystals, crystal shards, mystery boxes, consumable items, upgrade gems, and treasures will be stored in your quest bag until you fully complete a quest map. If you quit the quest, you will lose all the items in your quest bag.