Okay it was a pretty silly newb mistake. I've since gotten a new (encrypted) email and put that on my account. It seems to have worked since my other two tracking numbers have been sent to the new email (where they popped up in the spam folder).
Of all the months I spent researching this, I guess that was one obvious thing I completely overlooked, though I figured I'd be alright using proxies, since I know a couple guys who do that and have been ordering from other (less reputable) sources for years on their gmail accounts with no problems, aside from the occasional underdosed/bunk gear, which is why I didn't use their sources. So I'm sure I'll still be fine, but better safe than sorry I guess.