Go to play.google.com/store/account and change your payment information if necessary. To change the payment information for your Circle Premium subscription, tap “Update.” Tap “Cancel Subscription” next to your Circle Premium subscription to stop renewing it.
Turn off Assistive Touch in Settings. Open the General tab, then tap Accessibility. Select Assistive Touch from the drop-down menu and turn it off.
Hold the Circle app’s icon until the menu expands to access the Uninstall option. Tap Uninstall to remove it (you might need to first select App Info). Confirm by tapping OK.