Hello, @Anoop S Kumar,
That is because you have set the font from Elementor element settings as well which is overriding the global theme options fonts, please see this screenshot: https://postimg.cc/7fxVk5WX
So you have to find and remove that option or CSS and it will solve your issue, you can try to edit the element on the page and check in the element settings.
Otherwise, please share your site WP Admin Login URL and Credentials with me, in the private content area of this topic, so that I’ll check and help you out further.
WP Admin URL:
WP Admin Username:
WP Admin Password:
Regards 8Themes Team.