I'd be glad to help with your question about managing User IDs. Are you trying to change the login id for your QBO account? If so, follow these steps on how to change your credentials:
Log back into QuickBooks Online.
Click your profile icon next to Gear or Settings ⚙ in the upper-right hand corner.
Select Manage your Intuit Account.
Proceed to the Sign in & security menu.
Click your existing user id, then enter the new User ID.
Let me also share this article where you can see some of the most commonly used articles for additional reference and guidance: Get Started with QuickBooks Online.
As always, don't hesitate to reach out to us again if you need anything else. We'll make sure everything is sorted out.
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