To request a refund for MDN Plus:
- Access your account at https://accounts.firefox.com/signin.
- Click Paid Subscriptions on the left panel to open the subscriptions page.
- Click (or tap) Contact support.
- Fill out the form with your request by completing the following fields:
- Under What are you contacting us about?, select Other.
- Enter Refund Request in the Subject (optional) field.
- Explain why you are requesting a refund in the Description of the issue field.
- Click the Send button.