That seems to be for starting a new account? But I used to have one, and so I can't use these instructions (below): I don't see an "Advanced" button. It takes me from password straight to Security Code, which I have, But then just asks for the SMS code it's "sent", but I can't receive.
Macs using OS X Mavericks v10.9 or later
- Choose Apple () menu > System Preferences. Click iCloud, then select Keychain.
- Enter your Apple ID password.
- Click Advanced, then choose one of these two options:
- Get a Random Security Code.
- Don't Create Security Code. Choosing not to create an iCloud Security Code means that your iCloud Keychain is stored only locally on your Mac and updates only across your approved devices, not with Apple's servers.
- Follow the onscreen instructions to complete setup of iCloud Keychain.
Other ideas?
Thanks!