Hi Ernest,
No problem I have gone ahead and added this email you can login here:
http://www.ukairdates.com/wp-admin
I have also attached 2 screenshots. You want to go over to Settings -> WP Rocket then the File Optimisation page (wprocket-fileoptimization.png). Then at the bottom of this page the defer setting (defersetting-screenshot2.png) simply enable this to test.
To clear the cache make sure to “Clear Cache” and “Clear Cloudflare Cache” to 100% clear everything. You can clear both of these in the top admin bar under “WP Rocket”
Thanks.