What payment options are there?
You can purchase your subscription/credit right here on this website. To do this, sign in at https://mijn.waterkaarten.app/login with the same email address and password that you use in the app.
You can also purchase a subscription/credit directly in the app (via a so-called in-app purchase). To purchase your subscription/credit, you will need an Apple or Google account. To do this, go to your profile and tap ‘Extend’ or (if you have run out of credit) tap ‘Buy now’.
Not sure which email address you use for Waterkaarten? You can find this info in your profile (icon at the top right of the app next to the search bar). There, under your credit, you will find the email address you are signed in with.
You get a confirmation email every time you pay for a subscription.