LearnDash Multilingual Integration Addon GPL Overview:
This add-on allows for greater compatibility between LearnDash and multilingual sites that are using 3rd party plugins for administering the multilingual translations.
This add-on should be activated if you want to use the LearnDash Course Builder and Quiz Builder along with a multilingual set-up. In addition, this add-on should be activated in order to translate URLs (WPML only).
This compatibility add-on is not intended for adding or modifying translation files. Please see the Translation User Guide for information on translations.