LearnPress - Can't Translating Strings from JavaScript Files

Overview of the issue

In LearnPress plugin, certain strings, particularly those originating from JavaScript files, are not being translated on the frontend, despite being translated in String Translation. These is particularly the case for those strings in Quizzes.
This is a current known WPML limitation as explained here.

Workaround

Since WPML 4.9.0, you can scan JavaScript strings after activating the Detect strings in JavaScript files feature. Then, you can translate them in “Other strings” section of the Translation Management Dashboard.