In a message posted in the Archeage forums, Gamigo says the PTS is going to be offline for 8 hours. The reason is that they need to do some improvements to the PTS servers. The good news is that will certainly reduce the queue on the authentication.
We're making the call to close PTS for the next 8 hours to perform hardware configuration changes, general maintenance, and address the outstanding authentication issues with the support of the XLGames team. When we bring it online tomorrow morning PDT, we'll be scaling up closer to full production hardware settings, and that should mitigate queue times significantly compared to yesterday.
PTS will be going offline at 12AM PDT on October 2, 2019.
Edit: PTS is back!