In the last few days several of our adcenter accounts have suddenly stopped generating spend. These are accounts with hundreds of adgroups and thousands of keywords. It's a sudden issue, but I suspect its somehow related to the migration. My reps have said they have other clients facing similar issues, but I can't find anything on the forums about it.
My server logs show short bursts of traffic for maybe an hour in the early morning and then not a single impression the rest of the day. Bids are not the issue, as I've tested raising some bids to 400% of their current levels and the ads still aren't showing.
So anyone else see a similar issue with adcenter? This transition seems to be a disaster so far...