Download and install the “Google Authenticator” app from App Store (for iOS) or Google Play (for Android) on your mobile device.
Log in to your Multi account at the multi.io website.
Visit your Settings, click the Security tab. Then click Enable.
Scan the QR code with the 2FA app on your mobile device and enter the 6-digit pin provided by the app in the “text box”. Alternatively, instead of scanning the QR code, you can enter the 16-digit Account Token Key. This is displayed under “Your 2FA Key”.
Save your mentioned 16-digit Account Token Key in case you need to retrieve your Google Authenticator. In case you lose your 2FA device, the Key will be essential for you to gain access to your account.