I noticed this yesterday as well and wrote YPN support. They responded that they are looking into the situation and to forward any URL's that are affected.
However, shortly after their e-mail the ads started appearing again.
We have had the same ads - no real changes, so from here anyway, it appears to have been a temporary thing.
I don't follow you when you state that your ads were off 30% of the recent bad earnings this morning. Guess you're trying to say - looking at yesterday's data - your earnings are off 30% from your worst day?
We were off by $164, but that's normal fluctuation, I think. We made some changes that could have accounted for this. Unless it gets into that 25% range, it doesn't warrant turning off anything.
I was referring to a revenue decrease that started around the 2nd week of Jan. Today revenue is less than 1/2 of what it has been for the prior two weeks. Oddly Google revenue isn't much better. Visitors are down maybe 20%. Perhaps something weird is going on from that virus outbreak.
Maybe a lot of advertisers turned off ads for the superbowl weekend?