If it thinks you Amended you can delete the amended return.
How to delete an Amended return in the Online version
https://ttlc.intuit.com/community/amending/help/how-do-i-cancel-or-undo-an-amended-return-in-turbota...
If you haven't mailed it yet you can try to switch to efile.
Click on Add a State to let you back into your retun.
How to change from Mail to Efile
https://ttlc.intuit.com/community/e-file/help/how-do-i-change-from-mail-to-e-file-in-turbotax-online...
