have you tried asking? I mean tbh if that's want they want to do, then you just gotta respect it, even before being able to access their private site I respected them not wanting to upload it publicly.
I don't know the reasoning behind it but I think back to this uploader who was done with uploading chapter because of all the shit she got from disrespectful readers on this site, could be that idk.
But if they uploaded this one chapter than yea that's shitty but idk if they did or didn't
you see i wanted to ask but they never add people and they say not to ask ,besides i really respect their decision but i just don't see the point of doing something like translating and working hard on something and spending sooo much time on it just to keep it a secret it feels just like you wasted your time for nothing
i hope someone will pick up this manga, i seriously don't see the point of translating manga and working hard on it than upload it to a secret site where no body can read it or see your work except for few people