Are you saying there were no ponzi or scams that lasted for seven months..? You should know a few given your account age and status. I could remind you some, but I think you ignore the fact that your "proof of payment", or how you call it, has nothing to contribute to cloudmining being legit or not. Ponzi sites like cryptodouble also provides this, lol, proof of payment..

AMHash set a very high standard how to scam legitimately
Get a few well known but on the edge of collapse companies to mine, another one to provide services are here you go. They pulled a brilliant scam and nobody is responsible.
And the thing is this cloudmining.website doesn't live up to this new standard of scam, that's their problem