This is a total disaster of an add-on. First I searched for a term just for today and got 4 results. But I wanted to search my entire history, so I chose "all" in the calendar popup. It was loading endlessly, my computer slowed down and I had to restart FF. Then I chose the last 10 months from the calendar (which is extremely unintuitive and hard to use) and I got "no data". After that, whatever I would choose I would get "no data" as a result. But in the top bar, the whole time there is a message that says "4 results". And when you click on that, you get a small popup that says "Have a nice day!" (!?).