If you are receiving the below error then please try the below steps.
- Ensure you have the latest version of the Arsenal app
 - Go to menu (three lines top right of the page on Arsenal app)
 - Open settings
 - Under "Advanced" there is a "Clear keychain" button, click on that. That should force the user to be logged out completely.
 - After the above steps, attempt to log in again.
 
