When 2FA is enabled using a backup code, you will enter one of unique secure codes from generated list to log into your account and withdraw funds.
To enable 2FA using the unique secure code, you need to go to your personal account:
Settings → Security → Account security → Backup code
Next, you need to enter the PIN you received when registering the eWallet.
After that you will have 6 generated secure codes which can be used only once to enter, withdraw or generate new list of secure codes.
So, we recommend leaving one secure code in order to use it to re-generate secure codes.
Keep the codes in safety. You won’t see the generated codes again in your account.
You may optionally disable 2FA for entry or withdrawal and leave additional protection as 2FA with sending codes to email only for one operation.