[تم الحل] adding English UK and English US languages to my site

Background of the issue:
I am developing a site and trying to add English UK and English US languages using WPML. I have followed the documentation provided but it still doesn't work.

Symptoms:
Issues adding English UK and English US languages to the site despite following the documentation workaround.

Questions:
How can I successfully add English UK and English US languages to my site using WPML?
What steps should I follow if the documentation workaround does not resolve the issue?
Am I eligible for a refund if the issue cannot be resolved?