If you are a Sky customer using Mvmnt on your television, you will need to use the same email address that is linked to your account in the TV app. After entering your email address, you will receive a verification code sent to your registered email. Please enter this code in the mobile app.
If you are simply downloading the Mvmnt mobile app, head to the App Store for iOS or Google Play Store for Android, search for 'Mvmnt', and follow the prompts to install the app and log in.