Problem:
I translate the page and save the translation, but when I go to a page for that language i.e. http://example.com/en/about-us/ the content of the header is still the default.
Solution:
First of all, please go to WPML → Settings → Custom XML Configuration tab and add this XML config to it:
<wpml-config>
<admin-texts>
<key name="indutri_theme_options">
<key name="header_layout"/></key>
</admin-texts>
</wpml-config>
Once you did this, please edit the header template:
https://website.com/wp-admin/post.php?post=16&action=edit&lang=en
Now, use the top admin language switcher and select Spanish:
https://website.com/wp-admin/post.php?post=22&action=edit&lang=es
Here, edit the Permalink and change fmt-header to fmt-header-es (just simply add -es at the end, so the permalink in each language can be different).
The last step is to go to WPML → String Translation and search for the header template permalink. In the test website is fmt-header. As the translation, just simply add the permalink that you just set, fmt-header-es.
This time, when checking a page in the secondary language, the translated header will be used:
https://website.com/es/
Relevant Documentation:
https://wpml.org/documentation/getting-started-guide/string-translation/finding-strings-that-dont-appear-on-the-string-translation-page/#strings-arent-selected-for-translation
