Accelerated mobile pages issues

Hi,
I’ve installed the plugin in my website, but when i test the amp page on “structured data tool” by Google, give me always critical errors.
I’ve tried to installed it in an other theme and it perfectly works, so i deduced the issues are due to the first theme i used.
This one is “Swell theme” by ThemeTrust. I’ve contacted them and they answered me that they couldn’t help me.
You can give me a hand in order to fix this issues?
May i also send you the access of my website so you can take a look what’s wrong with it.
Many thanks

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