We can clear and resync the data on the app. This helps in fixing issues like this. From the Gear icon, click the Refresh Data and wait for it to load.
Also, you'll experience issues using the app if it's not updated. You'll want to visit the app store and update it from there. If this issue persists, it's best to uninstall and reinstall it.
I've added some links you'll want to check. These will give you info about compatible devices of the app and how to download it: