If you’re having problems figuring out what you changed it may be easier to go into “Add ons” and uninstall it and then download and install it afresh
However remember to unblock Answerbank
If it's firefox ..then top right corner click on 3 lines drop down menu comes down press addons you will se Ad block there ..you can delete it from there ..then install again on same page by typing in add block in search bar
I does sound as though you'e removed it.
If you haven't and can see the icon click on it go to options... a box will say add filters, click on Subscribe 'easy list' (English).