Hello,

This is my first OP cash out from the network of OPTIMIST.
Despite kucoin's warning about USDC:

Please note that the USDC-OPTIMISM contract address we currently support ends with 7ff85. USDC.e whose contract address ends with 31607 is no longer supported.

I do not know if this works for USDC or not if received funds from the OPTIMIST network from USDC because the team has to clarify this point the funds are received successfully for OP token.

However, to resume you need to transact from Spot to a trading account then trade OP/USDT and then LTC/USDT and then transfer again to the Spot wallet to cash out to a crypto wallet.

The image below clarifies all the steps: