Home page not showing in google/gtmetrix Other pages are showing

Hi
I have installed zencart and the site is working good when I try in my desktop/mobile.
Where as the site is not visible for google site speed as well as gtmetrix when checked for home page. Other pages when tried are working good.
Can anyone advise what would be the possible issue.
Thanks

pay your bill.

@carlwhat interesting reply

What is the website URL?