You can check your UPS user name (user ID) by following the method below.
1. Log in to the UPS home page.
2. After logging in, click your account in the upper right corner and then click "My Information".
3. Copy the "User ID" displayed.
4. Click the "Carriers" page in Ship&co. On the UPS setting page, paste the "User ID" from step 3 into the UPS "Username" field.