For anyone wondering, the Web Novel is still Actively update. In fact, the latest raw chapter is 928, November 5th of 2018, as in just Right This Monday(Korean Time). So judging by how the WN is still on-going, but the Webtoon stopped because both the Author and Artist "are hospitalized", you can guess how basically this Webtoon is dropped.
"Q: How long has this Hiatus been going on?
A: About a year now"
^ This
Well, unless the Artist for this Webtoon is in coma or something, then the time for their "discharged" to resume the Webtoon will probably be never.