Mobile responsive layout

I have a site that I’m using Cloudflare for my DNS.

The site displays fine on desktop computers however shows the full website -not responsive layout- on mobile devices.
NOTE: it works fine on PCs with resizing browser but the issue is on mobile devices

I do not have mobile redirect turned on.

The site is

Any ideas what might be causing this?

Thanks for your help!

Thats a question for StackExchange I am afraid, not here.

our website was working fine til we configured cloudflare so I guess it could be a cloudflare misconfigruation.
I wander if we have to set a special configuration for mobile detection or caching

It actually renders just fine on a mobile layout

Anyhow, that is not something that Cloudflare influences, so it is extremely unlikely to be Cloudflare related.