If your Xbox Live account is not connected to Origin, you can link them by heading into the Origin application on your nearest computer, going to the 'Add a Friend' option, and select the option to sync your Xbox Live account.
If you already have your Xbox Live account linked to an Origin account, but it's not the correct Origin account, you can change the emails around on your Origin accounts on your own, you contact EA Support so they can do it for you. In bold, I've included steps on how you can do it on your own.
Log into Origin with the account that is linked to the Dragon Age Keep. Click on 'Origin' in the upper left corner and select 'Account and Privacy.' You can see all of your linked accounts here, as well as change the email address on file. Change your email address to one that isn't linked to an Origin account to free up the email address that is linked to the Dragon Age Keep.
Log out of this Origin account.
If you know the email address for the Origin account your Live account is connected to, log into that account on a computer. If you've never used those credentials to log into Origin on a computer before, you will be prompted to create a username and verify your email address.
Once you are logged into Origin, click on 'Origin' in the upper left corner and select 'Account and Privacy' again. You will notice that your linked XBLive or PSN account will be listed here. Change the email address on file to the email address that is linked to the Dragon Age Keep. This will ensure that the Origin account with your Keep information is the same Origin account that is linked to your XBLive and PSN.
If you aren't able to remember your Origin credentials for the account that you use on your console, then go ahead and contact EA Support for further assistance.
If your accounts are linked correctly and your content still isn't importing correctly, I'd contact EA Support for that issue, too.
You can contact EA Support by heading to http://help.ea.com/en/contact-us/new/. Make sure that the website is set to the correct country before submitting the ticket!
