Indispensable but don't like the nag when I have donated already Rated 4 out of 5 stars

As with other reviewers I have found this add-on indispensable, especially when some online forms do not work very well sometimes.

My one complaint, for which I have omitted one star is that in spite of having donated, for which I incidentally had no acknowledgement, I am still being interrupted periodically by nags for donations, which are a nuisance.