The Monero Original Fork has happened

Dear traders,

Please check your accounts for XMO (the equivalent of XMR you’ve been holding).
The hard fork planned for April 6, 2018, took place. All XMR holders received XMO.
You can now trade XMO/BTC and XMO/USDT.

We wish you happy trading.

The Monero Original Fork has happened, HitBTC Official Blog