can't trigger my ads to show

I've been accepted, eligible etc but I can't trigger my ads to show in search. I had 2 exact keywords (and to be honest I am interested in just these 2 kws) but added a third one (broad) at the suggestion of MS help. Also increased the bid to $6 just to be sure I can see my ad. So far, nothing. Everything seems to be just fine with the account, as MS staff said the problem should be in keywords/bidding.

What to do now? Did you also faced this issue?

See, if you are checking using the preview / diagnostic tool of Bing Ads, it will almost always give the message "No results found for your keyword", etc, etc. I guess you have created your ad less than 24 hours upon checking .... As you mentioned it is Eligible, I suggest wait atleast 48 hours before you tweak campaign, in most cases by then the impressions and clicks start to happen if your initial bids are fine.