Just verified Duelbits ethereum address:  0x4E80744fa23cEC76e1621ce0DfACeB4B1D532e12

They don't even have 500k USDT to complete the withdrawal. I believe you are alright, but they don't have enough liquidity right now.
https://etherscan.io/token/0xdac17f958d2ee523a2206206994597c13d831ec7?a=0x4e80744fa23cec76e1621ce0dfaceb4b1d532e12