Sorry for the difficulty.
The first thing to check is whether the account is under a different email. Maybe your work email was used. Next, if it's the first time trying to access your account, it may not have been set up yet. In this case, click "register" and sign up for a new account - be sure to use the same email address used for your order(s) so they will show up properly.
If you're still having trouble, let us know by email so we can help you out: firstname.lastname@example.org.
I sent an invite to set up an account to your email. Please take a look and see if that will solve the situation. And please respond if it still doesn't work for you.