We received reports regarding users unable to cancel their QuickBooks Self-Employed (QBSE). A ticket (INV-43702) has been created and forwarded to our Product Engineers. They're now working to resolve this as quickly as possible.
In the meantime, I highly suggest contacting our Support team so they can add your details to our notification list. This helps our Engineers determine the number of affected users. An email notification will be sent to you once this has been resolved. I'll also inform you here when we get the update as well.