Here's and update from WP-ROCKET Team:
Hi Dhaval,
Shelley from WP Rocket here.
The plugin has a feature to use Geo-Widget where a customer can select his desired location and shop accordingly.
First, please make sure you've read this documentation article, to understand the possible issues related to use of that widget:
Using Geolocation/Geotargeting plugins with WP Rocket
https://docs.wp-rocket.me/article/1524-using-geolocation-geotargeting-plugins
and then if you browser around the changes start to reflect.
What specific changes are supposed to be made to the page once the cookie has been set?
I have also enabled "atum_location" in NEVER CACHE COOKIE settings and
If you do that, then WP Rocket will no longer cache or optimize any pages where that cookie has been set -- in other words, if that cookie is set for all pages of your site once the visitor makes a delivery area selection, then adding it to the Never Cache Cookies field would effectively disable WP Rocket across your entire site.
You can read more about this in our documentation for Never Cache Cookies.
finally I am also using DYNAMIC CACHING mini-plugin on "atum_location".
Do you mean the Cache Dynamic Cookie helper plugin from our Create Different Cache Files with Dynamic and Mandatory Cookies article?
If so, please share what the plugin's code looks like now (with your modifications in place), using a service like http://pastebin.com/ or https://codeshare.io/ (this preserves all the tags, formatting, etc., so that it will remain readable).
Cheers!
P.S. Please note that our support availability during the weekend is limited, so it may take us longer than normal to get back to you with our next reply — thanks in advance for your patience.