When your return was rejected, your accountant would have received the reason for the rejection. What was the reason given?
If you actually efiled a tax return using TurboTax and it was accepted, you would see it at this link: https://shop.turbotax.intuit.com/efile/efile_status_lookup.jsp
Unless it is shown there, you did not efile a return using TurboTax. You don't need to clear anything from an online account because that is not the reason for a rejection.
Did you by chance use the non-filer portal to register for the Stimulus Payment? If you did, a tax return was efiled for you and that return would now cause a rejection of an efile of your "real" return. If that is what happened, the only thing you can do is print and mail your return and write on it that another return was efiled using the non filer portal.
