Perhaps they're trying to get picked up for an official publication, and just give up when they know it's not happening?
Or they just lack dedication to followthrough on any of their ideas after the initial joy of starting it ends - I've seen this one a few times.
Is that a trap? Hopefully not. Anyways, hopefully, when the mangaka resumes you also resume translating it too, I really enjoy the memes you put at the end of each chapter, it's really fun.