[Решено] Single product template not connected with the other languages.

Background of the issue:
I am trying to use WooLentor to create a product template for a single product in three languages: BG, EN, and ES. The original language is EN, and I have translated the template into BG and ES. However, the ES translation does not appear. Here is the link to the page where the issue can be seen: скрытая ссылка

Symptoms:
Instead of seeing the ES text, I am getting the EN text on the ES version of the product page.

Questions:
Why is the ES translation not appearing on the product page?
How can I ensure the ES translation is displayed correctly?