In order for Shipping Optimizer to track your late shipments, your UPS account must be enrolled in the UPS Billing Center.
Here is the UPS Billing link below, to Enroll in the UPS Billing Center:
Click on Enroll in the UPS Billing Center. You will need your UPS User ID and Password to enroll.
Please note, once you've enrolled for online billing your paper invoices will stop, and you will get notified by email for your invoices. You can also manage and view your invoices on your UPS account.
If you're having any trouble during the enrollment for online billing, please click
the following link for UPS Billing Center Enrollment Support: https://www.ups.com/content/us/en/resources/sri/bill-center-enrollment-support.html