[ROOTS-RFA] Logging in with a guest account

**user:** *all users*
**behaviour:** *the translation on german is missing*
**important screensize:** *all devices*
**screenshot:**

<img width="782" height="938" alt="Image" src="https://github.com/user-attachments/assets/c5f3d6ad-8de2-45e9-abf9-02416d128863" />