At The Division Delta errors are frequently occurring on PS4.
Just a few minutes ago, the servers for The Division are back online. From now on, the content of the Underground expansion should be available on PS4. Agents are asked by Massive to visit the DLC page in the PlayStation Store and click on download to gain access to “Underground.”
However, the expansion is causing problems – similar to the launch on PC and Xbox One. There are currently increasing reports that agents are being plagued by Delta errors when logging in. The game cannot be started. Extremely annoying. PS4 agents had to wait over a month for the expansion, and now the next hurdle appears that must be overcome.
Massive has already addressed this via Twitter. They are investigating the issue that Delta errors appear when trying to enter the game.
How long it will take until it can really take off on PS4 is still unknown.
Furthermore, Massive states that the DLC is not yet displayed in some countries. It will be gradually made available in the regions.