On 7 July, 2017 we became aware that the cryptocurrency exchange Poloniex had disabled their Zcash wallet. We are not currently aware of any issue with the Zcash network. We monitor the Zcash network ourselves by running a few full nodes (out of the many [full nodes currently running on the network] (https://explorer.zcha.in/network?delta=604800)). We are also constantly in communication with the Zcash community — the many markets and wallets , miners, developers, and users. We’ve reached out to Poloniex to ask if they are having an issue that we can help with.
We’ll post an update if we learn anything about the performance of the Zcash software or network.
We hope this will be resolved soon! :zcash: