Welcome to the WPML support forum. I will do my best to help you to resolve the issue.
The footer of your site is designed using the theme Widgets(Appearnce>>Widgets). We can translate the footer Widget strings via WPML>>String Translation.
Please visit WPML>>String Translation, search for the strings, and translate them. Then check the translated pages and make sure you are getting the expected results or not.
Also, please translate the footer menus from WPML>>WP Menus Sync section for the expected results in the secondary language.
Please refer to the attached images and the following documentation for more details.
Thank you but we need all the text for translations to be collected in one file and to export it for translation. And the footer and menu links are not exported properly in the file.
Please note, it will not be possible to send the strings from footer widgets or admin options for translation with pages/posts. But we can send the strings separately for translation like posts/pages.
Please refer to the following documentation for more details.