To withdraw an active submission:
Sign in to your Submittable account.
Choose the Submissions tab in the main navigation bar or click your username in the upper right corner of the screen and select Submissions.
Click on the Active tab to see your active submissions. Click on the title of the submission that you wish to withdraw.
When the submission opens, click the Withdraw link in the upper right area:
When the dialog box appears, type a Reason for withdrawal that will be received by the organization:
Click the Withdraw button. Your submission status will now be set to Withdrawn.
Note: If your submission is in a terminal status (Accepted, Declined, or Completed) you will instead see a Remove link. Click it to remove the submission from your list view.