This. Last I looked you must mine to their server only which then switches you to the pool of your choice.
Ie. You have no idea if it is only Mining 4th at 2100 watts and when routed through their server they add 36th.
So you think you are doing 40th.
So you the. Get screwed when they shut down that addon 36th.
Note there is zero proof the theory above is true but the setup they force you to do can do this.
Your risk of not getting a true 40th 2100 watt miner is very high.
If they allow you to mine directly to a pool with no server in between you could see the real hash rate.
So far no one has done this so be very careful buying from them.