Why would you even want to stake with them? They talk about setting their pools margin to 100%. Is it then still transparently visible? What is the active stake? What is their pledge? How do the returns compare to public stake pools? What is the cost for each winning block?
All questions, we would not need to ask if that information wasn’t hidden? Is this perhaps a scam or a rip off? I personally, would want to see clear evidence on why this is better than a public pool.
A similar question has been asked recently over here.