If you purchased your URUNN plan inside the mobile app, your purchase is handled securely by the App Store (iPhone) or Google Play (Android), and it's billed to that store account. To view, change, or cancel a store payment plan, go to your store's settings:
iPhone: Settings → your name → Subscriptions.
Android: Google Play → profile → Payments & subscriptions → Subscriptions.
Still stuck? Contact our support team at help@urunn.com.