You can fund your Quantfury account balance wallet with Tether OMNI or Tether ERC-20. If you are receiving an address error when trying to fund with USDT, you are most likely trying to fund with Tether ERC-20 to a Tether OMNI wallet address.
Tether OMNI and Tether ERC-20 use different protocols and address types, and cannot be used interchangeably.