schema issue?

i received a message from the google search console and it linked me to this message
Invalid object type for field “brand”
( non critical )
i think the url in question is
https://counselingyogameditation.com/downloads/yoga-dvd-shipping-included/

also in the edd panel on the backend the “content analysis”
under structured data types it has as its message
No schemas found in the source code of this page.
can you perhaps let me know how to fix this ? thanks in advance

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