Board Thread:General Discussion/@comment-2600:1700:38C0:E350:7C40:CB98:6E25:B04-20190401200446/@comment-27660480-20190404155352

Once a collection is combined, it takes some time for the rewards to appear.

Waiting is also necessary when the event monsters are placated. The obtained goodies slowly fly towards the inventory. Speedy clicking on the upper level monster might not show the recent items obtained a second ago.