So, I delete the 3 or 4 best performing sites from Site Campaign 1 and start shiny new Site Campaign 2 with only those 3 or 4 sites in.
That was about 8 hours ago.
Impressions: 0
Clicks: 0
Have I done something I shouldn't? All the settings (language, countries) the same. I was getting thousands of impressions on those sites every day until this morning, now ZERO.
Any ideas?