huh... this is so weird but interesting too.
i got a Colgate ad so i'm gonna assume this is only reserved for bigger brands, and series with a very high subscribers/readership? i don't think readers would respond well to paying coins AND being forced to watch an ad just to access a Premium webtoon.
it doesn't seem they have to update every week, or follow any panel count per episode, seeing as readers don't have to pay anything to unlock the new episode.
i hope they roll it out so everyone eligible can apply :")