Why do some canvas originals keep pushing back dates?

I'm just a little confused and could do with some clarification. A comic I've been following for a while has been publishing episodes every few weeks for a few months, but this "season" (I assume) is drawing to a close, I can see there are still 3 episodes left but all are to be released in a set number of days. An episode was due to be released today but it's now gone to being in 36 days! Is this something that webtoon does?