WP Smush Pro not working properly

Hi,
We have installed and activated Smush Pro on our site but it doesn't seem to be working properly.
1. It is not automatically smushing the images when uploaded to our Media Library
2. Our site cyclelike.com is showing as not being 'mobile-friendly' and one of the problems is that the images are not being optimized enough and not being Losslessly compressed.

I've deactivated and activated the plugin but that hasn't helped.

Can you please help, thanks!

Claire
cyclelike.com