ESI Includes are not working on my server. I contacted tech support and they said to suggest it here.

I have done a test here - www.preciousfaithdesigns.com/test2.html

It is not my website, because I have bypassed Magento 2 in the test.

Magento 2 utilises ESI includes and in production mode not having ESI includes breaks the site.

Could you please find out why ESI Includes are not turned on for my sever? My test shows ESI includes are not working.

Tearing my hair out.

Thanks