AION 2 Taiwan published a September 23 known-issues update covering several live-service problems, including a bug affecting high-quantity purchases on the Server and World Trade Brokers.
NC Taiwan says the Trade Broker purchase issue was fixed through a maintenance-free update at 12:30 on September 23.
PURPLE Live reward workaround
The same notice addresses a problem claiming rewards from the Mid-Autumn PURPLE Live broadcast. Players are instructed to relog or return to character selection and enter again, after which the reward can be reclaimed through the chest icon beside the minimap.
Mobile Abyss boss UI issue
A separate mobile issue prevents the decorative HP-gauge image for Abyss bosses from appearing correctly. At the time of the notice, NC Taiwan planned to address that issue during the October 7 regular maintenance.
All of these items concern the Taiwan service. The Trade Broker fix is particularly useful as a snapshot of issues encountered by a live Server/World market implementation, but Steam Global’s economy rules should still be judged from its own release client and official notices.