A subscription in the Start 2 Run app can be activated via Google Play or Apple. A monthly subscription costs €1.99 per month, while an annual subscription costs €9.99 per year.
It is a good idea to cancel your subscription at this time. It will then remain active until the end of the current month. Afterwards, you will receive notification in the app to choose a subscription. Select an annual subscription.
Apple App Store: https://support.apple.com/it-it/HT202039
Google Play Store https://support.google.com/googleplay/answer/7018481?co=GENIE.Platform%3DAndroid&;hl=it
Via the links above, you can find the official support for managing your subscription via Google Play or Apple.