You can easily upgrade or downgrade your Submittable plan.
- Click on the More menu of the main navigation bar in the upper right corner of the screen. Select Account.
- Select Subscription Plan on the left
- Click the Change your plan button in the center of the page.
- Select your new plan.
You will be prompted if you need to make any changes (e.g., remove team members, enter payment info, etc) before your plan can be changed.