Being Dutch, I had a similar problem a few years ago. I solved it by changing the language in settings.
Click on your name (top right side of your screen).
A box will open. Click on "Preferences" (or "Voorkeuren").
About 5 options from the bottom you will find "Language" (or "Taal" I guess).
Don't forget to click on "Save" / "Opslaan"!
Thanks for your question. I'm glad to see Onno's suggestion worked well for your. Interestingly enough, English is not an option for me to choose from the "Select Language" option either. If I recall correctly, this translation tool is a Google Translate plugin, and it may be using your computer's IP address or some other identifier to display the "Select Language" text in Dutch automatically.
Qlik Community Team