By heading to your user dropdown menu (via the button in the upper right corner), you will find the alternative "Switch language" (scroll down if you don't see the following options when opening the user menu):
Click on this choice, and select the language you prefer:
Note that your default language is based on your browser setting.
Here are som examples for how you can change your browser language setting:
You can also choose your preferred language via the URL you are using to access Loopfront (bookmark according to your preference if you want a shortcut that gives you your preferred choice regardless of the language settings in your browser):
Norwegian: https://loopfront.app/no
Swedish: https://loopfront.app/se
German: https://loopfront.app/de
English: https://loopfront.app/en