[Cerrado] Swedish translations: titles not showing correctly and URLs with “-2”

Background of the issue:
I am trying to publish and display Swedish translations of my pages. Titles should appear in Swedish and permalinks should be clean (without '-2'). Here is the link to a page where the issue can be seen: enlace oculto

Symptoms:
The page headline shows in English and the permalink is forced with '-2' even though no duplicates exist.

Questions:
Why are the page titles not showing in Swedish?
Why is the permalink forced with '-2' even though no duplicates exist?