hi @Reinzinter ,
Set up your Tax Profile and Hyperwallet account - Creator Programs Support (epicgames.com)
Set Up Your Tax Profile | Fortnite Creative Documentation | Epic Developer Community (epicgames.com)
Just remember in Germany/Europe MWST may be payable like UK
You only get 7 days from opening you profile to finishing
If you cannot complete contact Player Support to reopen or wait 30 days when profiles not completed are deleted and you start again