Hello,
Thank you for your question,
Could you provide us information on your configuration? Is the Records Saving/Sending is set on after GPS fix/Time Sync? (In this case if time in not synchronized, device would not send any data).
Could you provide information on what NTP server are you using? It seems that there are issues with the NTP server time settings, please check if date is correctly configured at NTP server.
Try configuring your device NITZ only and see if you are able to acquire correct date and see if device sends records after Time Synchronization.
Regards.