If you've already registered an online account but have not linked, click on "Link My Account"
"Link My Account" page
Enter your 9-digit "Bill To" account number and click the "Submit" button. If you do not know your 9-digit "Bill To" account number, it can be found on a recent invoice or you may contact Customer Service.
When you're online account is properly linked, the account number will display. Now your pricing and terms are active online.