Are you using ads?
Quote from the site you posted:
We strongly recommend to developer to not use intrusive advertising platforms because they give a very bad user experience.
Even if they promise better earnings in terms of CPC or CPM they reduce the quality, and then the popularity, of your apps. That means your earnings too will be lower.
Companies that supply intrusive advertising (like interstitial advertising, or pop-ups) use often aggressive and intrusive code, to the point of being classified by some antivirus as Ad-Ware or Trojan. If this is your case, your app will be rejected by the TorrApk Staff.
Believe us, if you want to earn some money with your apps, you have to maximize the user experience before than the CPM.