To delete your Wufoo account (This will erase all your data and is irreversible):

1. Click on the Account tab at the top of the page.
2. Click on the View Billing Information link.
3. Click on the Delete Account button at the bottom of the page

To cancel your plan and downgrade to the Gratis (free) plan:

1. Click on the Account tab at the top of the page.
2. Click on the View Billing Information link.
3. Click on the Cancel Plan link at the bottom of the page.