You can leave the Beta Testing Program at any time by following the instructions below.
Open the TestFlight app on your phone. Tap the Open button under Kindara, then scroll down and tap Stop Testing at the bottom of this screen. Please note that this will remove you from testing, but it will not revert your app to the public version. To revert back to the public version, sign out of Kindara, uninstall the app, then reinstall from the Apple Store.
Visit the Google Play beta testing link, scroll to the bottom of the page and tap the Leave Program button at the bottom of the page. Once that’s done, open Kindara, sign out of your account, then go back to the Google Play beta testing page and tap the Reinstall the public version on Google Play or to the Google Play Store to uninstall the beta version then reinstall the live version.