I started promoting in Bing Ads and it has been over 24 hrs and I got only 3 impressions. Bid is set at 0.50$ at 7$/day. There are niche long tail keywords in phrase and exact match in 5 Ad groups distributed among 17 Ad sets. Headlines and other things are quite catchy I think but only 3 impressions. Why should I do to improve and get more impressions? Any tips?