I am still trying to get my issues sorted out. I brought Bitmain into the email conversation, which got a quick and apologetic response out of Umisoo, as well as an assurance from Bitmain that they would ask Umisoo to take a look.

Umisoo didn't do anything that fixed the issue. Eventually after reading this thread I found out about changing the difficulty, so I pointed them at Slush's pool with 2048 difficulty, and one of the units is hashing at 2 TH/s finally. I think they had to reboot it to fix one of the non-hashing boards. No one at Bitmain or Umisoo suggested this, it was only through suggestions here that I decided to try changing the difficulty.

My other miner is still not hashing at any pools I set it to, even though the graph on Umisoo's website shows that it is. I keep explaining this to them and then they keep saying they will look into it, then nothing changes and when I follow up they say that it looks like it's working and they will look into it. Then repeat. I've asked them now to provide a screenshot of the unit hashing at a pool not a graph from their website, to prove that it is hashing. I had set the units to Eligius to demonstrate this, since stats are public, but I don't think it got through.

I feel like this would be much easier to troubleshoot if I had web or SSH access to my machines but they I don't know if this is a service they provide.. I've asked them a couple times but they haven't responded to my question...

Bitmain has been responsive and easier to work with, as I've come to expect from all my dealings with them. It's not that Umisoo is unresponsive, but just that communication is very difficult, and well, they don't really appear to know what they are doing, or to pay attention to what is actually happening with the units...

I am in a very similar situation. I have two Antminer S4's hosted with them. Initially they had their own pool information set. In my case, I was able to change the pool using the Miner Manager interface. However, when I set them to GHash.IO, one miner gets about 350 GH/s instead of 2 TH/s, and the other miner doesn't show up at all. I switched to Antpool, and there, one miner gets 1.5 TH/s and again, the other one doesn't show up at all. The graphs on their website are incorrect. They show one miner hashing at 1.5 TH/s - so this one is more or less working, although it is hashing far below spec. The other miner is hashing at 2 TH/s according to their graphs, yet does not show up at all on any pools I set.

I have sent them several emails, and at first, they responded with very short emails promising to look into it. Now they are not responding at all. This has been going on for several days.

If I don't hear back from them by tomorrow I am going to attempt to reach out to Bitmain in the hope that they have some leverage with them and can help get my miners running. Failing that I am going to try to get a refund and have the miners shipped elsewhere, although given how things are going so far I fear even that will be a struggle...

SO basically... no I don't recommend them. And I am very disappointed with Bitmain for promoting them as a preferred hosting provider.

I wasn't on the original creditors matrix. I filed a claim recently and haven't received any correspondence about it yet, but on Pacer I can see that I am now included in the "list of creditors".

It costs money to see but according to the Pacer FAQ, if your total Pacer costs for the quarter are less than $15 you won't be charged.

While what you're saying make sense, I'm not sure if the correlation between block generation and price is so close as to be impacted by a week or two of higher-than-average block generation. I guess it would depend on how many of those extra coins were converted and how many were hoarded. Also consider there were some positive news announcements recently which might have had some effect on demand.

As for the recent price decline, I think it's often tempting to assign news too much credit for price movement, but in this case I think the recent announcment of the govt auctioning off 30,000 bitcoins on June 27th definitely has a negative impact. I can't see how this trend could reverse until after the auction..

Hi Juan,

I've sent a PM requesting to be added to the waiting list for one Antminer S2.

I paid for my miner on Wednesday, it shipped out on Thursday with tracking info, arrived Monday, up and hashing within an hour after switching out the power cable.

Thanks for a clean transaction pcfli.

Keep in mind there are differences between a defined lump sum of currency now and an indeterminate amount of currency over a specific period of time. The seller is offloading some of his risk and uncertainty onto the buyer, as well as earning a lump sum payment in exchange for potentially greater, yet speculative, future profits. This is the service the buyer provides to the seller, which enables the buyer to potentially earn a profit. A mining contract could be considered win/win for both the buyer and seller if: the seller gains the benefit of guaranteed cash now, for reinvestment or other purposes, and reduced risk exposure to conform to their risk management strategy; while the buyer receives the seller's future mining profits, which are greater than his initial investment, as a reward for taking his income over a longer time frame with greater exposure to external risk factors.

That said, in my opinion most of the mining contracts I see are very overpriced, but I don't think it's impossible to have a successful cloud hashing business model that is not a scam.

.11 btc donated: https://blockchain.info/tx/91bf3ac5977f7371cda69d42d584917dc2a7c9b73f17d113004700d14928ab99

.00018 petahash = 180 gigahash. According to the calculator at http://bitcoinwisdom.com/bitcoin/difficulty, 180 GH will earn about $1.39 per hour. I don't think this is a good investment...