You can easily manage your Opera VPN subscription at any time by following the instructions below:
Step 1: Tap on the menu
Step 2: Tap on Manage Subscriptions
When you tap on "Manage Subscriptions" this will take you into the App Store where your Opera VPN subscription is located.
You will then be able to manage your subscriptions from the App Store page you have been redirected to.
Please ensure that you are logged into your Apple ID in the App Store that was used to purchase the subscription before following the instructions above.