1) In the demo, the Ethereum wallet contains 10 USDC tokens.
2) Click on the 'Receive' button, choose the Crypto tab, and input the amount you wish to top up, for example 5 USDC.
3) You will need to authorise Fiat24 to access the USDC in your Ethereum wallet by clicking 'Allow access to 5 USDC', and sign and confirm the transaction through the wallet signature request.
4) The USDC is sent to the Fiat24 Crypto Desk smart contract and the 5 dollars are credited to your account within seconds.
5) After the transaction, your account terms show that you have 495 USDC available to top-up for free this month, beyond which a commission of 1% for each top-up will be charged.