As expected, no Mod was available after office hours to try and assist with the issue, so things kept getting worse until the next working day in Australia.
However, once they took note of the problem they acted swiftly to disable the bugged shop (undoubtedly not an optimal solution to all players, but likely to be among the best damage-control options, second maybe to extending the Faction Event for an extra day with the bug resolved), and clearly communicating that there would be a refund and a rescheduling of the event.
Noteworthy unusually clear and professional communication and action, and thus noted.
