I emailed the owner at the start of the contract and never got a reply, we are well over 12 hours later now, both contracts have ended and the owner still hasn't replied.
On a positive note, the rigs speed are very stable sitting at the posted speed. I just wished the owner(s) would be reading their emails and supporting their their rigs actively.
To those wanting to lease their rig, speed wise you'll get the speed you pay for but support wise it is a little bit of a gamble (in my experience anyway).
Speed stability: A+
Support: D (no reply in +12h and both contracts have ended hours ago)
sorry for the inconvenience. I will send you some funds back after I checked all informations