Hi, I just got home from work and found out from one of the Bungie guys on Reddit that I am indeed an absolute idiot and it was entirely fixable. My Blizzard account was apparently made (unintentionally) using an email address I made very similar to my usual one, for use with work and school things. Same password as the other one. So I've been using the wrong sign-in the whole damn time and had no idea, wow. lol thank you so much for your help and patience.