Starting from WPML SEO 2.2.0, term meta (such as SEO titles and meta descriptions for categories) can be translated via WPML → Translation Dashboard as String Packages. This allows them to also be translated automatically along with the rest of the site, making the process more streamlined.
Before this change, translations for SEO titles and meta descriptions had to be added manually in the category editing screen (as shown in your screenshot).
However, since WPML SEO 2.2.5, manually added translations in the category edit screen may no longer appear on the frontend. This is because WPML now expects these fields to be translated via the Translation Dashboard (String Packages) instead. That’s why the translations seem to have disappeared. This behavior is already reported.
Available options:
1. Roll back to WPML SEO 2.1.1
This will allow you to continue using manual translations in the category edit screen.
2. Translate via WPML → Translation Dashboard (String Packages)
This is the recommended approach moving forward.
