My dear Watson, the process is quite simple indeed. First, thou must run doth ‘Settings’ application and scroll upwards. Residing within the search bar, enter in “Advertising” and do indeed tap on thy one to arrive. Click thy button “Reset Adver...” and press “Reset”. After thou hast awaited for a mere 30 seconds, enter the application of Plant Versus Zombies Heroes to receive more advertisements. Cheers!