What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
You seems to have two account. One with the email address "firstname.lastname@example.org" and the other one which you have input to login.
I did check both of your account and did not find any issue with that. Your JotForm account username for "email@example.com" is "computerservice". Please use your username to sign in to your account.
You may also like to clear your browser cache before you sign in to your account. The following guide should help you clear browser cache: http://www.wikihow.com/Clear-Your-Browser's-Cache
DO get back to us if the issue persists.