If you subscribed via the Forma Pilates Android app, you will need to manually cancel on Google Payments, as instructed here: https://support.google.com/googleplay/answer/7018481
If you have trouble canceling there, see: https://play.google.com/store/account/subscriptions
Note: We are not able to cancel this Android subscription for you. You will need to do it from your end manually.
Search the Help Center to find answers or, if you're still having trouble, contact us.