This is late, but im gonna say the obvious reason. The translators are spending hours to do it for free. Sometimes, they don’t get enough traction or acknowledgement on their own site due to people sniping and uploading without their permission, leading them to slowly stop. Or, if not a lot of people are interested, then they stop because it’s just not profitable to them.

I liked this story but after so much time it hasn't been updated. Why do good stories get dropped so often? ( ̄ε(# ̄)Σ