Secret World Legends servers are down for maintenance and in order to deploy the latest update that brings a number of changes to the Auction House. Most notably, Auction listings can be put up for a maximum of three days along with a limit of the number of items that can be listed per day. Lastly, the listing fee for non-Patrons has been set to 10% while Patron listing fees have not changed.
The update also fixes a number of bugs and solves issues as well as makes adjustments to certain requirements such as reducing the Item Power requirements for elite 2-9 dungeons.
You can read the full update notes on the Secret World Legends site.