Yes, I'm at fault here with missing the e-mails. The Photobucket account was registered using an old e-mail address that I was using as a kid. I happened to find the account by accident, by scrolling through my password manager.
So these are the unfortunate circumstances. This post basically shows what's it like to be a living and breathing edge-case (missed e-mails & no images in your account).
This actually made me think about the edge-cases I must have shipped at work and how they're affecting people.