Hello @Kannakart,
Thanks for updating the thread. 
I can confirm that on home page navigation model element is not working. I have tried following things to narrow down:
- I changed the home page to a different page and navigation model worked fine. So the problem lies in page that’s currently assigned as home page.
- Next, I saved home page content as template and then exported the same to my local setup. I then imported the template to my Pro Theme setup, created a new header and added navigation model. Upon testing, model worked fine.
- Next, I saved and downloaded the header template. I then imported to my header builder and that is also working fine in conjunction with the page.
- Lasterly, I created a test page on your website and imported the content template but problem lies over there also.
So far I think it’s a problem with some script conflicting with home page. I have checked all the places in your website wherein custom scripts could be added but there aren’t any scripts that points towards home page. Actually there’s aren’t any scripts other then few CSS codes on your website.
In that regards, I think it’s a issue of plugin conflicting. Please try to deactivate all plugins and then see if home page model is working or not. If it’s working then you can narrow down by reactivating one at a time.
I can’t test this on my end as we are not allowed to fiddle with customer website without taking due permission. In case issue is still there, please give us the permission to test things further. I would like to let you know that while we are testing, website may have issues temporarily.
Please let us know.
Thanks.