Sorry to see you go! 😭
Flux can be deactivated in the marketplace section of your Starling Banking app. Simply navigate to Flux in your connected apps, hit the menu (the three dots on the right side) and then click 'remove integration'.
To deactivate Flux in Monzo, please navigate to your profile, then hit the settings cog in the top right side. Choose 'privacy and security', then 'manage apps'.
For Android: Hit the menu (the three dots on the right side) and then click 'remove access'.
For iOS: Swipe right to remove access.