Dire Maul chests has been temporarily disable to avoid exploiting and server crashes in all realms.  Patch 1.7.0 will addres the issue permanently.

A hotfix has been applied to all realms that disables all chests in Dire Maul. This was done to stop cheating players from exploiting the chests, which was resulting in realm instability and instance crashes for all legitimate players on multiple realms. A more permanent fix will be applied in Patch 1.7. This permanent fix will allow us to reinstate the chests.

Please note that only the normal treasure chests were disabled; this hot fix should not affect tribute runs