Why does the form send to default e-mail?

You might be testing the notification using the "Test Email" button in the Email Wizard. Note that this button will only send a test notification to your account email address. If you want to test the email recipient that is in your notification, make an actual submission in your form. Just fill your form and submit it.

Here's how to find and update the recipient email of your form notification, in case you don't know how. http://www.jotform.com/help/41-Finding-out-E-mail-Address-used-for-submission-notifications