Just obtained the Sealed Tome of the Lost Legion from Isle of Thunder on my Warlock, created a “Demonic Healthstone” with 3 in inventory. When clicking on the Sealed Tome, I was displayed with “Missing Reagent: Healthstone” when I clearly had 3 of them in my inventory.
So, not sure what’s going on, I’ve followed every video explaining how to “use” the Tome and every single one has a “Healthstone” (not Demonic before the change) that was used to create The Codex of Xerrath thereafter. So, now I’m stuck w/o any resolutions how to obtain the Codex version.
And yes this is the first time I’m completing this on a Warlock.