Browser TOTP
Go to https://authenticator.cc/ in Google Chrome
Select Add to Chrome
This will add an extension to your Chrome browser.
Select the browser extension icon then select Scan QR Code
Drag the cross arrow box around your QR Code that is displayed in your FTP Access page in Web Manager.
After you scan your QR code, you will get a conformation message stating your account was added.
Click on the browser extension and you will get your 6 digit passcode.