What do we do with the Mystery Boxes?

[SincereGoodbyes]

I've got them from the daily prize thingy, but... what do I do with them?
D:

[Raiten Ka]

Funny, they were supposed to give you Starseeds... .__.;

Did you open your box before your time? If you did, then that would explain it.

Check your email to see what time did you receive. Because it can only give you prizes if you open on the exact same time or later.

[SincereGoodbyes]

Really? D:

I'll have to pay closer attention to that, then.
Thanks~<3