can get the game to to take our email or password to play the game

Perhaps reading the answer to your original topic will help you. http://answers.ea.com/t5/Plants-Vs-Zombies-Garden-Warfare/plants-vs-zombies-garden-warfare/m-p/2710648#U2710648

Origin account is seperate from Xbox Live account. The passwords should be different, for security reasons.

If you are sure you already have an origin account, then this would be an Origin account issue, and would probably like to contact a game advisor:

1 Click on the following link: https://help.ea.com/contact-us
2 Make sure you are logged in (top right corner)
3 Click on the blue button "Contact a Game Advisor"
4 Enter the name of your game or product (or "Origin" for account-related issues) and click "Find Solutions"
5 Select the type of issue and the platform you play on, and click on "Find Solutions".
6 Click on the blue button "I still need help" if the FAQ articles do not apply to your situation.
7 Select a contact option. Note that you may get different contact options depending on your country.