Social media floating bar plugin on mobile device

Need help configuring this plugin to render on small devices, vs. menu icons there now which don’t render correctly.

I’ve configured celloexpression’s Floating Social media plugin (incidently without adding any code hooks): https://www.ads-software.com/extend/plugins/floating-social-media-links/

for my scratch site child theme here
https://www.worldupsidedown.com/wpnow

The model site that uses the plugin beautifully: https://www.silversix.net.au

On the following mobile device demo site, all of silversix’s icons appear, even on the smallest device, but mine do not. What are the code modifications?
((You need to type in the website to see it rendered:
https://prism.mobiforge.com/))

Thank you in advance for your time and advice.