1. Login to your expedia.com account.
2. Under account overview, go to ThankYou Network options and click on "Update your ThankYou account number".
3. Delete your ThankYou Network account number.
4. Hit "Accept these changes".
5. Go back to the Account overview.
6. Click on "Learn how to enroll in ThankYou Network".
7. Hit "Sign in" under "Have an Expedia Account".
8. It will take you to "Become a ThankYou Member" page. Fill in all the information as if you are signing up for ThankYou Network membership for the first time. Complete this process to generate a new ThankYou Network account number.
9. Go back to "Account overview" by clicking on "Account" at the top of the page and enter or update your newly generated ThankYou Account number into the "ThankYou Network options". In most cases, it should have already been updated automatically when you generate a new account number.
10. Copy this account number and go to you ThankYou Network account at
www.thankyou.com and add this new account as one of the sponsor.
11. Bingo!