You can update your account details through our website here. You can also update this information in the Calm app.
On an iOS device:
Open the Profile screen by tapping the icon in the top left corner of the app home screen. Tap on Settings below the calendar on the Profile screen, and look for 'Change account details'. Tap that to update your account details.
On an Android device:
Tap the icon in the top left corner of your home screen to open the side menu. Tap on your email address listed at the top of the menu and look for a 'Change Account Details' option. Tap that to update your account details.