Hi guys,
I found a fix for this problem. I am sharing the link with you from WP Rocket documentation. It turns out their mobile cache does not include tablets, therefore they have a “helper plugin” to fix this.
I just thought I would share it with you incase one of your customers complain about the problem, now you will have a solution for them.
Also maybe you can consider adding this to your demo site. When I checked your demo site on tablet like you asked me to, it looked like the caching wasnt working there either.
Cheers and thanks.
https://docs.wp-rocket.me/article/708-mobile-caching