Hey,
Then this can only be fixed via Firmware Updater.
The firmware needs to be updated to latest using Firmware Updater.
If you don't have this one, to receive updater, please contact your sales manager.
If you don't have any contacts with your Sale managers, please contact with them on the official website https://teltonika-iot-group.com/
and click on "Contact Us" button. When you will click, please fill the form and submit it.
Regards