Sometimes when reports are syncing, the WiFi connection can have a momentary blip which will stop the syncing process.
You may notice your report on the PC dashboard showing as a 'partial' report.
Once the WiFi is back up and running, simply go back onto the device that you used to complete the report, open up the app, go to the synchronise screen and press 'Send Reports' again and this should re-start the sync process.
If you see an error message on your device, please contact us via the live chat facility, and send across the error details so that we can investigate further, or contact us at [email protected]