We're in the process of making 2FA mandatory for all Sage logins. When 2FA becomes mandatory for your account, you can't remove it. 

Although you can't permanently remove 2FA from your account, you can remove or reset the device you use to authenticate. You can then set up a new device.

If you've lost or replaced your device, visit our guide on how to change your 2-factor authentication (2FA) device.