Not responsive on mobile

When viewing the page with Aeolus portfolio on on a mobile phone, or with the desktop site minimised in Chrome, the image is chopped off, not scaled down. The plug-in is advertised as responsive, but this isn’t working. Here is a link: http://swoonline.co.uk/wordpress/portfolio/green-circle-fencing/
Can you help?
Thanks

Joe

https://ww.wp.xz.cn/plugins/aeolus-creative-portfolio/