Add Artifact (6) and Heirloom (7) to the loot filter.
(They weren't around when the addon was first written.)

For the loot qualities see here

This should be Artifact (6).

@dsblack115 Thanks! I fixed it! I also added it to the addon but without an Artifact or Heirloom to loot I can't really test it... I'm reasonably sure it will work though.

Yeah heirlooms are items you get around end game but they aren't for your high lvl char. They are meant to be given to your lower lvl chars to help lvl them up. They scale based on lvl.

Ok since Legion started I know what Artifact weapons are, but Heirlooms I have no clue. I was told you get these when maxing out a character, but I've maxed out a character and don't have Heirlooms. There must be a whole lot of end game content I have yet to experience.

I gotta read up on how to do this so when I max out one or two during this exp I can get heirlooms for lower level characters. I'm such a WoW noob, and I've been playing on and off for 6-7 years.