How to Add/Update Your Phone Number in Marketplace? Proceed to online marketplace: https://shop.jeppesen.com/shop/. In the upper right-hand corner click the login button: Enter in login credentials, accept terms & conditions, and then hit LOG IN. You will be redirected back to the homepage. From there, click again on the Account icon highlighted in red above. Then click on ACCOUNT DETAILS. From Account Details, you can add/update your phone number. Once you click save the account has been updated. How to Add/Update Your Phone Number in Marketplace? Proceed to online marketplace: https://shop.jeppesen.com/shop/. In the upper right-hand corner click the login button: Enter in login credentials, accept terms & conditions, and then hit LOG IN. You will be redirected back to the homepage. From there, click again on the Account icon highlighted in red above. Then click on ACCOUNT DETAILS. From Account Details, you can add/update your phone number.