We're sorry to hear that Indy Pro didn't work for you. To cancel your trial and/or subscription, access your plan by clicking your avatar in the top right corner and selecting 'Account settings'.
Then select the 'Your plan' tab in the left panel. Click the 'Downgrade to Free' button to begin the cancellation process. You'll be asked to provide feedback on why you're downgrading — this information helps us improve and develop Indy.