To gain access to your seller account, try logging into Seller Central and click Didn't receive the code? on the bottom of the Two-Step Verification page. Select your backup method for receiving your code.If you don't have a backup device and can't change your settings, you'll need to go through the Two-Step Verification Account Recovery process. This process requires you to submit documentation verifying your identity. Once verified (usually within 12 hours), Two-Step Verification will be disabled so you can log in. On your next login, you will be required to set up Two-Step Verification again, this time using devices that you have access to.