Img subdomain AMP errors

Hi there

I really love this plugin because it makes my website beautiful on mobile. I may want to purchase the premium add-ons, but first my problems need to be solved if possible.

Google Search Console gives some AMP-errors. On this page (https://search.google.com/test/amp?utm_source=wmx&utm_medium=link&utm_campaign=wmx-agg&id=uaOgtQ8Q-8MzxDZqLu-4Hw) it says that a img is causing the problem. All my images are stored on my subdomain img.smartphonetrends.nl.

Can you help me? My full website is https://smartphonetrends.nl

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