[مغلق] translated page not showing up when clicking in the flag

Background of the issue:
I am trying to switch the language on my website الرابط المخفي from French to English by clicking the flag, expecting to be redirected to الرابط المخفي.

Symptoms:
When I click the flag to change the language to English, it doesn't redirect me to the English version of the site (الرابط المخفي) but stays on the French version (الرابط المخفي).

Questions:
Why is the language switcher not redirecting to the English version of the site?
How can I fix the issue of the language switcher not working as expected?