The following error has been fixed.
Error Regarding Bingo Missions

There was an error that prevented players from collecting some Rewards from the Bingo Missions.

Affected Period
4/30 (Tue.) 04:00 a.m. Unison Time - 5/2 (Thu.) 03:44 a.m. Unison Time

The error has been fixed, and Rewards will now be sent directly to your Present Box.
Additionally, Rewards that could not be obtained during the time of the error have been distributed to the affected players at the time listed below.

5/2 (Thu.) 07:30 a.m. Unison Time

We sincerely apologize for any inconvenience caused by this error.

Thank you for playing Unison League!

-Unison League team