If you do have a long report to write, please ensure you are saving your mystery report frequently (every 5 - 10 minutes preferably). Otherwise, if a session has been inactive for 20 minutes, you will experience a session time out and your work will not get saved. To save your work, please scroll down your survey form and Click Save. Please see screenshot below.
Losing your work can happen if you have intermittent Internet connection. Therefore ensure that you save your work frequently. A top tip is that if you are on the go and you have a long report to write up, it might be prudent to do your write up on a Word document that doesn't require Internet access which you can then copy and paste unto your survey form later.