Check this article... Currently BTC speed and costs are heavy as hell so may be it is taken off line till cost come down and speed resume?
Blocktrades bridge seem to be active with BTC in. Out bound is limited.

https://steemit.com/bitcoin/@kingscrown/want-to-take-your-btc-profits-and-sell-them-this-simple-trick-will-save-you-time-and-money