[Resolved] WPML + YOAST: Removing the categories prefix creates a 404 in alternate language

Hi

I am using WPML in a 2 languages site (ES & PT-BR) developed with the Elegant themes' EXTRA. I am using Yoast SEO plugin to manage SEO matters.
In this site I put in the menu links to categories to list all posts within this category.

In Spanish (the default language) I get the proper post listing (ex: hidden link ) when going to my secondary language Portuguese, using the language switch or going directly to the URL, I get a 404 (see hidden link )

In another case, the Spanish category shows the post listing correctly ( see hidden link ) where the Portuguese goes on a post hidden link from this category.
I would expect to a post listing in hidden link instead.

I understood that the "Remove the categories prefix" option on Yoast could interfere for which I installed the "Yoast SEO Multilingual" plugin. I tried to reactivate the category prefix in Yoast which would solve the problem but I cannot leave it like that for SEO performance.

In the past, using this "Remove the categories prefix" option by putting "keep" then "remove" back and purging all caches, I could get a temporary fix to this problem. Nevertheless It would appear again on plugin updates.
Now with the last update, doing this fix is not solving the problem.

How can I solve this problem?

Thanks in advance for your help