We have contacted bittrex but haven't any response from them, neither positive or negative, i think they are waiting for the resolution of the actual conflict on the bitcoin blockchain as we are using CounterParty which is based on Bitcoin.

Regarding the website, it will soon be updated, we prefered focusing on the distribution and development, we didn't found the time to properly work on it, however, in the next few days the website will be updated.

Thanks for your feedbacks, the team really appreciates them.

Regarding the sweep process, there are some issues with counterwallet however, we found an alternative confirmed by the counterParty community : https://github.com/Jpja/Sweep-XCP-Paperwallet

Just ensure that you put the right name : NVST and to set the miner's fees to 0.0008 BTC or higher.