First, open up your Flint wallet through the Chrome browser extension.
Next, click “Buy” and select “Cardano”.
Flint wallet utilizes the third-party MoonPay to purchase ADA using your currency of choice e.g. USD. Note: if you receive a message that MoonPay is “Coming soon to your region!”, you will need to first turn on a VPN and try again.
Once on Moonpay, indicate how much ADA you wish to buy. Next, click “Continue”. You should receive a verification code in your email. Input the verification code, read through and agree to the terms and click “Continue”.