Hello, GM Delia here.
The beginning of another legend, 

We would like to inform you of the upcoming update regarding the error reported on July 9 (Thu).

[Confirmed Error]
Some World content rewards could not be claimed under certain conditions

[Upcoming Update]

• Expected to be resolved after the July 30 (Thu) update

• For unclaimed rewards from World content ending on July 23 (Thu), compensation will be issued as follows.

■ Compensation Method

Unclaimed rewards will be sent via in-game mailbox

■ Compensation Date

July 28 (Tue)

We sincerely apologize for the inconvenience,
and will do our best to provide a better service.
Thank you.