Hello, @MohamedZoz!
It's nice to meet you in the community.
Simple Network Time Protocol (SNTP)
In the navigation tree, choose Internet > Internet Services > Simple Network Time Protocol (SNTP). In the pane on the right, you can configure the parameters related to the SNTP, as shown in Figure.

Parameters related to the SNTP:

If you can’t change the settings according to the method I provided, please contact your carrier and request them to configure it for you remotely, because your product belongs to the carrier series products. And there are many functions that cannot be managed on the local WEB page.
Thank you!