We have been running direct linking Ads on Google for some time, most of which using Prosper202. At the beginning of this month, all the ads using Prosper202 stopped showing up in Google, whereas those that did not use Prosper202 ran normally.
I then installed CPV Lab on the same domain and ran those ads again. They ran normally for several days and then sudden stopped as before.
I then moved the CPV Lab installation to a new domain. Again they ran normally for several days and then sudden stopped as before.
I contacted Google support but just could not accept their explanation. They just simply said that there is no guarantee that any particular ad would win an auction and show up.
I wonder if it is possible that Google does not like the fact that the tracking link passes through another domain before its final url?
For more details : Brand video ad