You can find information about Tise Member by clicking Membership in the app's settings. Here you can create a membership and change one you already have

If you want to change a current membership, you can choose change membership. You can also click on the "M" icon next to your profile picture.

Once you create a subscription, it will run indefinitely and can be cancelled at any time. To unsubscribe, select cancel membership. If the subscription is cancelled, it will end at the end of the period you paid for (year or month).