Places the locations of the scarab chests in Ahn'Qiraj Temple and Ahn'Qiraj Ruins. While player coordinates don't work in dungeons, you can still see map POIs.
Scarab Coffers contain a variety of items required for Ahn'Qiraj quests and can be used to increase your reputation with the Brood of Norzdormu. These quests can give transmog sets (often referred to as Tier 2.5) and other items.
This will not work in WoW Classic as there are no maps in instances. Don't.
There is no way of knowing if you've looted a chest already and I think it'd be too complicated to devise anything more than that. This is meant to be a simple lightweight addon that shows scarab coffer locations.
If you find additional scarab coffer locations, send a screenshot of the map location and coordinates. You can still get map coordinates of the cursor in an instance, just not your player coords. I'm pretty sure I got them all but it's always possible I missed one considering wowpedia/wowhead even forgot some that I've included in this addon.