In the second image, extracted from the Extension “Web Developer” you can see that despite having the option “Show Product Title” in “OFF” mode, you can verify that the code of the Theme is duplicating by default, the H1
https://www.rincondesilencio.com/wp-content/uploads/2018/09/duplicado-producto-visualizado.jpg
https://www.rincondesilencio.com/wp-content/uploads/2018/09/duplicado-producto-Web-Developer.jpg
This is terrible for SEO.
I need to solve this.