Patricia, if your "add button" has not yet appeared, you still have one or more matches to accept or reject. If I remember correctly, there's a counter at the top of your GEDCOMpare report that tells you how many you have left. You won't get the "add buttons" until every single match is dealt with. I know it's hard to see what you may have missed, especially if you imported a large GEDCOM. Best wishes as you proceed!