[تم الحل] Menu items dissapear after reloading page in new language

Background of the issue:
I am working on a site under development and trying to add a menu in a new language using WPML. I follow the instructions from a YouTube video: الرابط المخفي.

Symptoms:
After adding menu items in the new language and saving the menu, all menu items disappear upon reloading the page.

Questions:
Why do the menu items disappear after saving and reloading the page in the new language?
Is there a specific step I might be missing when adding menu items in a new language using WPML?