Note:
If you wish to use Xero SSO, you must use the same email address for your Control-C account as your Xero, for it to work correctly.
Please follow these instructions to activate 2FA on your Control-C account
In the Control-C portal... click on the drop down beside the user name...
Select Two-Factor Authentication
Click 'Enable Two-Factor Authentication'
Using your Authy app enter scan the QR code to create and enter your code in the box and click verify...
Once complete take a copy of your manual 2FA key just in case you need it later.