I am currently renting one of your rigs "AD0 (Scrypt 1.80 MH/s)" for 72 hours. At the moment the rig says "Error: Mining rig is not responding!". I have 47 hours left of rental time and I am not sure how long the rig has been offline, I think about 20 mins? Do you know how much longer the rig will be offline? If it is offline for much longer, could you extend the mining time?