Sometimes when installing an app the previous session data is still present on the device even if it has been uninstalled. To clear this cache, please do the following steps:
- Open Settings
- Scroll down and select Apps
- Search for the App using icon top right you wish to clear cache and select it
- Click Storage
- Click Clear data
- Click OK on the corresponding menu
Your app will now have all the stored data cleared and you can reuse the app and login.