Forum Moderators: martinibuster
CPM ads often result in a depressed CTR but higher earnings. That can make it look like your EPC has increased.
Even if your CTR seems to be stable, it likely would be higher if no CPM ads were being shown.
But at any rate, if your income is up, congratulations!
Plus, sometimes the ad displayed can trigger a higher CTR even if you did not do any other change.