Yes, you can disconnect your Starling app from your SumUp account at any time. To remove the SumUp tile from your Starling Marketplace, log into the Starling app and head to the Marketplace section.From there, tap on your SumUp tile and select Remove.
This will stop Starling retrieving data from SumUp. You can contact SumUp customer services to revoke Starling’s access to your SumUp data.