After submitting an offline attempt, a button appears with the text "continue your attempt". This button is misleading, though, because you cannot actually continue if it's already been submitted (but it hasn't been synchronised because you're offline).
The solution is probably to hide the button altogether.
To reproduce on the app:
- Switch off wifi (be offline)
- Tap a quiz
- Submit the attempt while offline, and you will see:
- You can see in progress) but if you try to tap on it, it indicates you haven't got enough permissions
- The 'Continue your attempt' button seems to indicate that you can continue the previous attempt. If you tap on it, you cannot continue (you cannot dismiss the offline attempt an start a new one .. nothing) you only see this: