Contact the vendor.

CVandijk wrote:

I purchased an add-on - duplicate remover for excel. I downloaded it, and
enter the key number to remove the trial. It was working find with a link in
the tool bar to use to remove the duplicates. Yesterday, I opened my excel
file and the links were missing. I can not find it anywhere. The file is in
my "Start" folder, but I can not get it to work within excel. Can someone help