[Gelöst] Issue with Translated Page Not Linking in WPML

Background of the issue:
I am trying to link my default French page with its completed English translation using WPML. The issue can be seen on this page: versteckter Link

Symptoms:
The English version of the page does not appear when switching languages using the language switcher. The translated page is not properly associated with the original French page.

Questions:
How can I ensure that the translated English page is correctly linked to the original French page?
What steps should I take to resolve the issue of the language switcher not displaying the English version?