Hashflare.io took the chance of delayed transactions to start scamming.
even tho your order confirm on the blockchain more than 300 confirmations it still shows pending on their site, and in few days it goes timeout, but they got the money and it's in their wallet, still you wont get your contract.
They do not answer support requests, they don't care.
This is serious problem, most people should know the risk before invest in a cloud mining though. Do not invest in cloud mining if you don't want to get into this situation.
So far I didn't see any proof of this accusation, even though it can be right or maybe will be solved after few weeks wgen their support reach your ticket as they have thousands of it waiting to be answered but most people don't care about the backlog and still submit another ticket, make it worse.