Hi there, hdickens.
Is the contractor also added as a time-tracking only user in Quickbooks Online? According to the investigation, a time-tracking only type of user can't also be added as 1099 Vendor using the same User ID (Auth ID), or vice versa.
This is because Intuit Accounts were built in such a way that it does not allow the same User ID to login to two different features that were built on the same platform. Since Quickbooks Online, Workforce, Time Tracking, etc. are all built on the platform (using the same Realm ID of the company), the login system doesn't allow the same username to have access to each of these separate features.
This is also the reason why it was suggested to let your vendor use a different email address as a workaround. You'll also want to let the time-tracking only profile change the email address by deleting the user and add it back again with the new user type.
Let me know if you need anything else. We're always here to help.
