[Resolved] I have been asked to come back to chat once my developer has checked the issue related to the topic ...

Problem:
The client reported that despite correct translations in the WPML string translation section, some sentences on certain pages of the Spanish version of their website were displaying in English. This issue was not present in an older staging version of the site.
Solution:
We identified that the issue was due to a conflict between language files from WPML and another language file. We recommended the following steps:
1. Ensure to back up your data.
2. Remove the language files or folders located outside of the

wp-content/languages/wpml

directory to avoid conflicts.
3. Do not drag these external language files into the WPML folder as it can overwrite existing translations.
4. If the issue persists, restore the

wp-content/languages/plugins

folder and remove the language files one by one to find the problematic file.
5. Uncheck the option "Cerca le stringhe durante il rendering delle pagine" to avoid rendering issues.

If this solution does not resolve your issue, or if it seems outdated or irrelevant to your case, we highly recommend opening a new support ticket. Also, check related known issues at https://wpml.org/known-issues/, verify the version of the permanent fix, and confirm that you have installed the latest versions of themes and plugins. For further assistance, please visit our support forum at WPML Support Forum.