Custom Fields, Brand | Year/Season | Gender

Hello!

I would like to enter and show custom fields / taxonomies associated to a product.

Brand
Year/Season
Gender

I have seen a plug-in that could do the job, https://sv.wordpress.org/plugins/types/

I can get these custom fields to show up when entering all the information, but I can’t show the info.

I also get an error message in the plug-in “Your theme’s template file for displaying Product items is missing custom fields.”

Do you know if this could be implemented in the Basel theme?

And if so, where I should look.

Thank you