Disabled Message not showing up; Iphone Still Can Save Image. Please Answer

Hi, the plugin does prevent right-clicking the image/text, yet the selection disabled message does not show up after the plugin is activated.

I am using Chrome and I have tried to uninstalled other plugins + clear cache, but the message still does not show up. Neither using the default message nor changing the message works…

And one more question, is the pro-version required to disable saving image from iPhone or the free version also comes with this function?
Apparently it works on your testing website https://wccp-pro.com/2012/01/07/template-sticky/, but not mine (tested with iPhone 7).

Thank you in advance.