Cancel GamingVPN in your Apple ID settings: on iPhone or iPad go to Settings, tap your name, then Subscriptions, choose GamingVPN and tap Cancel Subscription. Deleting the app does not cancel a subscription. You keep Premium until the end of the period you already paid for.
Cancel on a Mac
Open the App Store, click your name, choose Account Settings, find Subscriptions and click Manage, then cancel GamingVPN.
Refunds
All purchases are processed by Apple, and only Apple can issue refunds. Request one at reportaproblem.apple.com. If something is not working, email us first at info@gamingvpn.tech; we are happy to help.