Dashboard not updating real time

SYSTEM INFORMATION
OS type and version Ubuntu Linux 24.04.4
Webmin version 2.630
Authentic Theme version 26.30

In my previous projects with virtualmin pro more than 2 years ago, I can see my resource usage real time from virtualmin dashboard.
In this latest project, I cannot see it real time, pie chart and graphs are not moving.
Is there any limitation for GPL user now?

if spec is required, it is 2vCPU, 4gb RAM.

have you refreshed it and cleared cache?

They only move (update) when your browser window and the dashboard page are in focus. To focus the page, click on an empty area of the dashboard.