If you find that your earnings have decreased, it could be for technical reasons, or for a performance problem on your site. Read the following questions to find the problem.
How site approval works
The Test Unit works but I don't see the player with the advertisement. What do I do?
It may also be useful to review some of the following tips:
Which format should I choose?
How can I improve my Fill Rate?
How can I maximize the revenue I earn from my site?