GSC tag image error

Hi guys your plugin is awesome, it works perfectly even to users don’t code like me. Recently i received this message in my Google Search Console account but i can’t find a solution: The tag ‘img’ should be replaced with an equivalent ‘amp-img’ tag.

Could you guys please help me?
I’ve searched many times and Google says the URLs probably won’t index in the SERP.

Thanks!

The page I need help with: [log in to see the link]