Did you have any clicks? Otherwise there will be no keywords.

If yes, check this relevant thread regarding the same issue for more tips:

We had the same experience when we launched a new product. You will no see results for impressions that did not result in a click. We did a manual campaign and got no traction. We then tried an auto campaign and gradually as the algorithm learnt we started getting clicks and hence results on our report. You need to be patient and let the algorithm do it’s thing and then hope your product, ad etc is compelling enough that some of those clicks turn into sales. It then become as self perpetuating cycle. Impressions = clicks = sales = more impressions etc
Good luck