Mobile version of my site being displayed on some pages

Hi,

Sometimes when i create a post on my site (that’s using the woo commerce storefront theme) the public view of the post or page defaults to mobile view but on on a desktop browser and i cant get rid of it and view the desktop version.
A WooCommerce engineer told me ot looks like W3 total chache is the problem and is caching and serving up the mobile version instead of the desktop version.
It seems totally random, sometimes it does it and sometimes it views as expected as a desktop view.
Are you able to help me work out why or a fix for it?

https://www.ads-software.com/plugins/w3-total-cache/