Please make sure you have the latest app version installed. You can update your application through the:
- Play Store on Android (Update your Android apps)
- App Store on an Apple device (How to manually update apps on your Apple device).
If this does not resolve the issue please contact Support and describe the issue you are having in as much detail as possible, including the model of the device and the version of the OS the device is using.
If possible please provide screenshots.