Hi There @cksiva09,
Thanks for writing in! Upon checking your site, I see there are JavaScript errors on your console log which should be the cause of this issue.


Disable any CSS/JavaScript minifications on your Autoptimize plugin, clear full cache including browser cache (https://www.wpbeginner.com/beginners-guide/how-to-clear-your-cache-in-wordpress/) and re-test your issue again.
If you’re still having issues, then you need to remove any custom JavaScript that you have added to your site and re-test your issue.
To further narrow down your issue, try disabling your 3rd party plugins and see if you’re encountering a plugin conflict. If the issue resolved, then you can activate your plugins one by one to see which plugin causing this issue.
If you’re still having issues, please provide us with your WordPress login credentials in a secure note to check your issue further.
Let us know how it goes.
Thanks!