Welcome to the WPML support forum. Before your ticket is assigned to one of my colleagues, please allow me to guide you through some initial debugging steps to help speed up the support process.
Are you using a Page Builder to manage these buttons and their URLs? If not, in some cases, those strings may have been recognized but not associated yet with the String Translation panel for the translation. Please visit WPML>>String Translation and click on the *Translate texts in admin screens »* link at the bottom of the page.
Then search for the missing strings in the *Admin Texts Translation* screen and check whether it is listed or not. If so, please add it for translation and translate it.