Hi there, cindy112.
Cancelled QBSE accounts can no longer be accessed. Are you previously subscribed to the QuickBooks Self-Employed TurboTax bundle subscription?
You can actually select the Self-Employed stand alone subscription so you can activate your account and access it afterward. You'll see this option after signing in. You can also check out this article for more details: Downgrade From The Tax Bundle To QuickBooks Self-Employed Only.
Aside from that, if your accountant or bookkeeper uses wholesale billing for QuickBooks Online Accountant, you can ask them to have your account added to their plan.
Let me know if you need anything else. We're always here to help.