finished daily tasks a second before it ended
If you want an individualized response, you’ll need to create a support ticket. I doubt Customer Support will be able to help, but it only costs you a few minutes to make a politely-worded request.
I’m sorry you didn’t get the achievement. It’s possible that the server time expired sooner than you thought, but your client didn’t realize it — that would explain why you saw 5/5 and heard a gong, but didn’t get the laurel + stuff.
John Smith: “you should kill monsters, because killing monsters is awesome.”