To cancel your premium membership you just need to cancel the pre-approved payment in Paypal. The instructions as to how to do this vary depending on your Paypal account but normally:
Log into Paypal then:
- Click ‘Profile’ near the top of the page.
- Select ‘My money’.
- In the ‘My pre-approved payments’ section, click ‘Update’.
- Select the merchant whose agreement you want to cancel and click ‘Cancel’.