Check your USDC balance from the Home Page
Click on ZeroOne, then on Exchange and enter the amount you wish to purchase.
Please remember that deposits must always be at least 1,000 ZeroOne.
WARNING: If you enter 1,000 as the "value to be paid," the value in ZeroOne may be less than 1,000 depending on the exchange rate.
Click SWAP
A summary of the requested transaction will appear. Click Confirm.
The system will send a text message to the registered phone number with a 6-digit code that must be entered as requested.
The code is valid for 120 seconds, after which a new code must be requested.
Enter the code in the boxes and click "Confirm Transaction."
The exchange confirmation will appear.

You can check the transaction from the Home Page by clicking on the USDC balance to see the sale and on the Zeroone balance to see the purchase.