You can add or remove subscriptions from your Grow Credit account by going to “My Subscriptions” on the website and clicking "Cancel Subscription" under the corresponding subscription. In the mobile app you can go to “Subscriptions” under “My Card” and then click on the subscription you want to remove. From there, you can click the three dots (or kebab menu) in the corner and click “Remove Subscription”.

You should update your payment information with the subscription provider, or you may also cancel subscriptions directly with them.