My connection is OK but won't downlods. Since y esterday is disable.Why? Must be fix.

I have always used Adblocker Ultimate and found it good , but recently when I went to download it again because of the recent thing that FF did by disabling all extensions , I find that AB Ultimate wants to "store unlimited data" on my desktop , this is pretty much is doing exactly the same thing as what AB Ultimate is trying to prevent , why does AB Ultimate want to "store unlimited data" on my desktop ? , sounds suspicious to me.