If your NordPass subscription was made via App Store on your iPhone, the only way to cancel it is through your iOS device.
To do so, follow these steps:
1. Open your iOS settings and tap on your name (the Apple ID section);
2. There, find and choose Subscriptions;
3. Tap the NordPass subscription. You should see the option to cancel it, if you do not - it means the recurring subscription is already cancelled and you will not be charged unless you subscribe to our service again.