I’m here to help you, Chel.
Yes, it takes 24 to 48 hrs before the invitation it expires. I’d recommend reaching out to your employer and asking for another invitation link.
Since you already have a QuickBooks profile, you can use it when you receive the invitation.
From there, you can access the 1099 data your employer submitted to the agency.
Moreover, you can explore this article and learn more about QuickBooks Self-Employed and give you an outline of everything you can do and how to get set up: Overview of QuickBooks Self-Employed.
If you need further assistance with the processes in QuickBooks Self-Employed, feel free to leave a comment below. I’m here to support you. Have a good one.