Set off safesearch on Bing, DuckDuckGo, Yep, You, Yahoo, Ecosia, Qwant, Metager, Startpage, brave
I'm sorry, maybe I've fixed it locally, I pushed a new version now! Let me know if you still have issues
I haven't tried it yet, but do I need to login?
I try it without login, and it works now with setting on my country. Some country lock the safe search setting
Not working for Bing