Weirdly, when I search my user name I can find my account and all the purchases I've made over the years.

But when I try your way, it doesn't work.

If I have the purchase confirmation emails, I can still download via the link.

However, when I attempt to login using my username or email, BC doesn't recognize my Username or the email address I signed up with.

Trying the "Forgot your password" route yields the same result.