My CPM ads have stopped running 2 days in a row and I am thinking that it may have something to do with a competitors ad schedule. Say a campaign costs only $1.00 for 1000 impressions, is it possible for a competitor to put an outrageous maximum bid (say $200) to shut everyone else out of the running? I have a campaign, that when it runs, only costs about $0.80 to 1.00 for 1000 impressions. I have raised the bid to $50 and still can't get it going. Same thing happened yesterday. Suddenly I started receiving impressions again this morning, only to have it stop about 3 hours later. Today, I even went so far as to delete that campaign, and start a brand new one - still 0 impressions. Any thoughts?
You'll need to wait 24-72 hours now for your new cpm ads to be approved. Every site targeted cpm ad is manually reviewed before it goes live. If you make a change to it after it's been approved it will go back into the que.
Normally it doesn't take that long for my campaigns to start though (even on the weekends). I was under the impression that the campaign stopped only if I changed the text of an ad currently running. Are you saying that if I make a bid change, change the target location, create an ad variation, etc that it stops the whole campaign? Also I have been wondering if I can have one campaign with identical ads, but all link to a different landing page? I thought I read somewhere that if you use a different landing page, you must promote a different service? Is this correct? Oh and I hope someone knows if advertisers can raise the bid so high that no one could ever beat them out (unless they want to pay an outrageous CPM)