@Daniela-and-Julius0 ,
the Airbnb communtiy center is provided in a couple of languages, just click on the world ball beside your profil button in the top right corner of this page and select your preffered language
In the English speaking CC you will find mainly users from the US, the UK, Australia, Canada, etc., but also various other nations in Europe, Asia and South America and the rest of the world
- and also US citizens living and hosting in Germany.
I just wanted to point out, that the community center is not a service center, it's more likely a platform, where hosts and guests can discuss or get help from experienced members.
If you need to get help with a technical problem, you may call the German support number, they do have english speaking staff as well.