My two factor auth won’t shut off or send me codes

2FA can't be turned off as per this explanation:

If you already use two-factor authentication, you can no longer turn it off. Certain features in the latest versions of iOS and macOS require this extra level of security, which is designed to protect your information. If you recently updated your account, you can unenroll within two weeks of enrollment. Just open your enrollment confirmation

email and click the link to return to your previous security settings. Keep in mind, this makes your account less secure and means that you can't use features that require higher security.

Extracted from:--> Two-factor authentication for Apple ID - Apple Support

In that support article, you'll find all the instructions (at section "Manage your account" and its sub-sections) to create / add a trusted device where you can get the authentication code.

Regards

Giulio