You only signed up this account on 12th October this year (two weeks ago), and you have no articles or tips associated with it. Nor is there any obvious sign that this account has had any activity on it other than the initial sign up and this question.
Are you sure you used this account? Perhaps you used a different email address?
The other account exists, and has articles associated with it, so it's likely you used a different email when you logged in to it.
If you can't remember the email address you used, you need admin help, so ask here:
http://www.codeproject.com/suggestions.aspx[
^] - Chris should be able to help you (but will probably want some proof).