Option 1: Making purchases using your Mydoh digital card details. 1. Login to your Mydoh child account. 2. Select the “Wallet” icon at the bottom of the screen. 3. Select “See card details” and enter your Mydoh child account password once more 4. Enter the card details that are revealed directly into the Roblox website, in order to purchase your Robux. Option 2: Making purchases using Mydoh digital card using your Apple wallet.  1. Login to your Mydoh child account. 2. Select the “Wallet” icon  at the bottom of the screen. 3. Click “Add to Apple Wallet” . 4. Once the digital card has successfully been added to the Apple Wallet, navigate to the Roblox app. 5. Once you attempt to make a purchase within the app, the Roblox app will automatically prompt the Mydoh digital card details from the devices associated with Apple Wallet.