Problem with stcuctured data

Hey ya guys,
it’s about:
Structured data > hatom: microformats.org

I’ve tried many things. I’ve tried modifying functions.php, content-page.php … So many things – and NOTHING WORKED FOR ME! I don’t know what the hack to do anymore.

I’ve tried adding some code – and it says: “Error in ..” bla bla.

I am so tired of this. I lost 2 hours for nothing.

I am using Tempera theme.
Thanks.

Regards,
Bo.