By default the domains are configured to Auto-Renew.
To disable Auto-Renew for a domain:
- Login to your account
- Go to Domains
- Find the domain name in the list and click on the drop-down arrow next to the wrench icon on the right side
- Click on Auto-Renewal Status from the drop-down menu options
- You will see the domain auto renew status and you can disable / enable it by clicking on the button (Disable Auto Renew / Enable Auto Renew)