The first thing you need to do is clear your cookies and cache. This is a vital step, so please follow the instructions in the link for your browser software.
Once you have done that, you need to validate your account. Again, follow the directions in the link exactly. If you don't read and follow the directions, you're going to have a problem.
You will need to use your old email to validate your account. If you can't access that email, let us know so we can update your email for you before you validate.