Jae-min's step-father is a vampire.
Jae Min already knows that Ma Ri is a vampire
The updates stopped because Ma Ri turned Jae Min, Soo Ri, and Woo Mi into vampires; they all formed a coven with Shi Hoo; and the five of them went on a destruction rampage, killing all other characters and ending the Manhwa.
Those two prisoners that the news mentions were released for good behavior in chapter two will appear later in the story, probably as antagonists
In Chapter 26, Professor Vamp's chart reads that vampires who drink pigs blood, "grew immunity to sunlight (but *unavailable to the public*)."This omission will be plot-crucial in some way. Possibly, vampires aren't immune to concentrated UV lamps, like tanning salons. Or the government might find some other way to weaponize UV radiation... in a way that's non-carcinogenic for humans, of course.