This thread is resolved. Here is a description of the problem and solution.
Problem:
The client needed assistance with translating PDF documents located in the footer of their website. They were unable to find the relevant strings in the String Translation interface.
Solution:
We advised the client to navigate to WPML>>String Translation and click on the Translate texts in admin screens » link at the bottom of the page. They should then search for the missing strings in the Admin Texts Translation screen. If the strings are listed there, the client should add them for translation and proceed with translating them. For further guidance, we provided a link to our 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.
Please note that this solution might be irrelevant if it's outdated or not applicable to your case. If you're still facing issues, we encourage you to open a new support ticket. We also highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. If you need further assistance, please contact us in the WPML support forum: https://wpml.org/forums/forum/english-support/.
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This topic is split from https://wpml.org/forums/topic/flag-icons-in-header-near-menu-items/