Hi Pablo, comparing different pages of your site source code I have the impression that most content is wrapped in a div with class entry-content
except products. This we could use in our advantage…
As you already suspected, go to Settings > Media and find the option Apply to in the Images section. Set it to Links inside Sections(s) only.
Then scroll a bit down to find the Section(s) field. Enter div.entry-content
here. Then Save the options.
Let me know how it works out 🙂