I have two travel destination websites. On the larger one, clicks stopped completely about 10 days ago about the time that CPC bids stopped. The larger site has about 5 times the traffic as the smaller site which continues to earn from a mixture of CPM and CPC bids. Naturally I'm earning far less than I would otherwise on the larger site. Using the tools available, it does not appear that the site is subject to the two-click "penalty". Both sites have a similar layout and monetization strategy and are set up the same in AdSense. There are no policy violations on either site. I'm tearing my hair out trying to analyze what has gone wrong. Could it be a reporting bug? Should I write? I don't have an AdSense account manager.
Thoughts?