I have tried this in the past and didn't work. I would just land on the duckduckgo.com/lite blank page, with no search results. And I have also try it right now and can't even install (I'm assuming it's because Firefox recently moved to version 59.0)

works here, tried it before suggesting it :/

How strange. Well, thanks for the info.

Just noticed that it only works when searching for single words, not for multiple. That might be it.

I just tried that and for me neither works.