...which leads me to believe it is a problem with the dataset...
I realize this is an old post, but I'm having this issue myself now in ArcPro 2.7. Message includes:
0 Matched (-nan(ind)%)
0 Unmatched (-nan(ind)%)
0 Tied (-nan(ind)%)
How should I interpret this? My excel spreadsheet has some 1600 rows of addresses.