Question about ads

hi i have a question regarding ads and i wish someone could answer. so, while reading specific stories i never had to watch an ad before an episode and even if i had to, it was like for 1 or 2 episodes while in other stories you have to watch 2 ads before every chapter. my question is whether the authors control this or if episode is putting ads in stories with more reads


I think its a glitch when you dont get an add. because it always 2 adds before a chapter unleash its the first chapter