Just something I would like to throw out here... just because a payment wasn't missed yet, does not mean the underlying operation is fully functional. This is the whole way that many cloudmining ponzi scams were able to function so long, and get so much trust before finally taking the money and leaving.
Also, being unwilling to share the mining addresses for a mining asset, is unacceptable, IMO.
I have lost thousands in a previous cloud mining ponzi called LTCgear, so I'm very intent on making sure all of this information is public, to minimize other people taking losses like I did.
I'm not insinuating one way or another what is going on in this particular situation, merely stating what I think is the right way to do a mining asset.
But also, something to look for, is figuring out how much the operation should be mining with the amount that it has, then calculating the amount that the operation is paying out, and figuring out if the numbers make sense. If the person is saying they have 100 TB or whatever, and they're paying out 2-3x the amount that 100TB could be mining, even on the best day... that's a pretty good giveaway to what is really going on IMO...
If they're stating the fact they are giving extra to the payouts, like I do frequently, that's one thing, but not doing that, and continually paying out more than the operation would ever be able to actually mine, in my opinion, is a red flag.
Once again, I'm not giving my opinion of this particular situation, I'm merely taking the opportunity to point out a few things that I know about similar operations that have turned out to be scams.
So please, don't flame me here, I'm trying to protect the community with information. That's all.