Posting this here as well, I've posted this through the in-game support desk after asking around in the Enclave shout chat with no remedy for my issue. Both this week and last I had met the full requirements for the Donations only to find myself behind in terms of story progression and I am utterly confused as to why.

Selecting the donation box does not yield any additional scenes as it simply replays the "revisions will be made on Tuesday at 4AM" message. Selecting Kozakura and all of her text options as well as returning to Mitsuba and talking with her seem to yield no changes either.

When submitting a bug report, please use the below template and thoroughly fill out the necessary information.

■Date & Time: 2018.05.29
■Frequency: Once
■World name: Gilgamesh
■Character name: Lucius Novius
■NPC name: Kozakura
■Class/Level: WAR 70
■Party or solo: Solo
■In-game time: ???
■Area and coordinates: Doman Enclave, X: 5.5 Y 5.7
■ Platform: Windows

■Steps:
1. Met donation requirements of 20,000 gil both this week AND last
2. Fulfilled quest objectives to speak with Mistuba
3. Further growth to the Enclave halted, no achievement attainable though people around me seem to be able to claim said achievement
4. Asked with community and reselected the donation box and the NPCs Mitsuba and Kozakura, exhausting every option available with no changes.
*Add more steps if necessary