I had a similar experience a couple of weeks back. Zergpool went down for a few hours and I lost the hash. Didn't mention it that time here but even if I did, Pinpins would probably ignore it as they ignored your post. Shame as I was hoping to use them long term. Went with Blockmasters at the end. Rewards are similar, no downtime yet. I guess they just use better servers or know how to set it more efficient.