Hello, my friend,
Sorry for my tardy reply, but I did not get the notification email from the forum system.
Now, I did check you website url and it seems that the Adaptive images plugin is working alright. All you need to do is know how to test it. For instance, checkout these debug urls for one for images:
Also see here the results of my testing your website in my browser’s Responsive design mode. You can find more info on how to test this for yourself in the “How to test” section” of the plugin description page here.
Let me know if I can help you any further!
Cheers,
Takis