So Bitmain owns the Umisoo S2 cloud? I thought Umisoo and Bitmain are just close business partners.
Several months back it was released by BITMAINTECH that they had acquired Umisoo and Snowball.io. The company acquired to the 2 entities and possibly others in the effort to create hashnest, a cloud mining platform. Hashnest, once stood up, was supposed to run almost autonomously. Everything that I just said is based on recollections of the original information release. Over time a vast majority of the information about HASHNEST has been changed or editted. I can't say that I am a fan of changes in information or processes like have been occurring but there is only limited action that can be taken.
If you are looking to invest but have not already, my advice would be to just make sure you only put forward what you are willing to lose.