This happens because your CSV file has some blank rows that the plugin detects as blank products. You need to scroll down to the bottom of your CSV file and find out if there are some extra rows with no information on them but one column filled in. Another possible reason is that you have “chunks” of your file where there’s no info but it still has rows below. See screenshots as an example.
In short, just make sure that your CSV file doesn’t have any empty lines.
