Firefox для Android: форум сообщества

Firefox browser for Android is my favorite, but it still has many shortcomings, like you cannot use private DNS in it, there is no option of bookmark import export, you cannot move bookmarks up and down and create a group of tabs and you cannot use themes, and there is no Hindi language in the inbuilt translate, and the speed of the browser is also low and not smooth, I request you to work on whatever I have told you and implement it in the browser, thanks

I need to adjust settings in about:config but it just loads a blank page. I have tried clearing storage and cache and even reinstalling but it won't work. How can I get access to this?