You can easily change the method of Two-step Verification:
1. On the My Account > Two-step Verification page, select your new choice from the drop-down list.
2. If you selected Microsoft/Google Authenticator App, scan the QR Code or enter the secret code into your app. If you have a previous MySonicWall account in your Authenticator app, it will be replaced by the new one.
3. Click Save.