I want to change the default langauge, DuckDuckGo uses when I start a search. What I already tried to do is simply add DuckDuckGo to my search bar. I also installed their addon. Both works if I configure on the DuckDuckGo homepage to use german by default. But since I erase all my firefox cookies by default on logout, I have to restore that setting each time. The default config for DDG is to use the standard language of the browser I think. So maybe that is configured wrong?
Using Google I can change the language easy by using: https://www.google.com/?hl=de https://www.google.com/?hl=fr ....