Blizzard Entertainment announced that the World of Warcraft Remote Auction House will be deactivated on April 18, 2018. Players that are currently using the app will have to do their Auction House related activities in-game, once again.
The WoW Remote Auction House will be deactivated on April 18, 2018. On that date, you will no longer be able to view Auction House listings or make Auction House transactions through the official WoW website or the WoW Armory app, and all links will be removed from our website. After April 18, you’ll still be able to use the WoW Armory app for all other purposes, including accessing your character profile, talent calculators, event calendars, and more.
In a post that was updated three months ago, Blizzard stated that the Remote Auction House allowed players to browse the Auction House in World of Warcraft. They could check the status of existing auctions, purchase items, and create their own auctions. A single World of Warcraft account could preform up to 200 Remote Auction House transactions per day (including bids, buyouts, and creating auctions).
Blizzard is aware that some World of Warcraft community sites make use of Blizzard’s API to access Auction House-related data. Blizzard is going to continue to support for that. In short, those community websites will still be able to provide players information about things like prices for a specific item in the Auction House. The app, however, will stop doing that as of April 18, 2018.