About this Add-on
There is no user inteface for this add-on. To turn double-tap back on, just go to Menu / Add-ons / NoDoubleTap and press the disable button. Double tap will now work and there is no need to reload your web page. To turn double tap off again just press the enable button.
There is a bug in that NoDoubleTap can sometimes fail to turn off zooming on a web page (this seems to mainly affect slow loading pages). The workaround is to go to Menu / Add-ons / NoDoubleTap and press disable then enable again.