Hi,
Works well for me with the same router and firmware. Perhaps there's something wrong in the configs. Could you send me the router's Troubleshoot file via private message? It can be downloaded from the WebUI, System → Administration → Troubleshoot page.
Edit: the user sent me a couple of Troubleshoot files and I was able to find a bug that prevents the NTP server from starting when there is no Internet connection on the router despite time being synced via GPS, which doesn't require an active data connection.
The bug is registered on Teltonika's internal systems, but as of now there's no timeline for the upcoming fix. Before a fix becomes available, a temporary solution can be used. Add these two lines to the System → User Scripts page:
- sleep 90
- /etc/init.d/ntpserver start
This will ensure that the NTP server starts despite the router not having an Internet connection. Make sure to place the lines before the 'exit 0' line: