Couldn't complete setting up my old watch with my new phone.

Half way through pairing my old watch to my new phone, I get: "Couldn't set up your Apple Watch. Setting up your apple watch requires the latest account security. With an option to upgrade it. Then I get: "Setting up Apple Watch Cannot be set up" "This feature requires two-factor authentication. The Apple Account (Mine) does not support two-factor authenitication.

IOS on phone is up to date - oops 18.1.1 is now available

Two Factor is on in my apple account

Rebooted and reloaded too much to count. Updating the IOS now and will try again