Retina logo dissapears when plugin is enabled on mobile?

Hello

I have been looking to increase my page speed and was very impressed when this plugin increased my speed to 96 for mobile and 95 for desktop according to Google.

However when the plugin is enabled the retina logo disappears on the mobile version of the site any ideas on how to fix this? In addition to this it also moves the content to the left slightly.

https://www.adcpropertysolutions.co.uk/

Thanks
Ashley Graham

https://www.ads-software.com/plugins/async-js-and-css/