Well, I am of the opinion that a typical Internet provider like Galaxus should respond promptly to enquiries from prospective buyers. Other providers offer live chats, with which I have had good experiences, by the way. You can't quite replace a "face-to-face" sales conversation, but still!
If I, as a buyer, am interested in a device, I would like to have an answer to a question as soon as possible, otherwise go offline or look for another supplier. Technically, this is no longer a problem. It's more a question of how much staff is worth it to a supplier ...!

Excuse me! Now I have found the question... As mentioned by Perret.claude, the settings are made very easily and quickly via menus.

And what is your question? All the buyers of this product will get your complaint, but we can't help because there is actually no question above!