[Geschlossen] Language switcher links to home

Background of the issue:
I am trying to implement a custom horizontal language switcher on my WordPress site using WPML. The site I need help with is versteckter Link.

Symptoms:
The language switcher links back to the home page instead of linking to the translated version of the current page.

Questions:
Why does the language switcher link to the home page instead of the translated page?