You can't have delayed the submission, only a tax due payment. You have to actually click the big orange button to submit it at the time. So it sounds like it wasn't filed. So delete the amended return and just fix your original return and file it. You can efile until Oct 15.
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...
How to Efile
https://ttlc.intuit.com/community/e-file/help/how-do-i-e-file-my-personal-individual-tax-return/00/2...
When you efile you get back 2 emails. The first email only confirms the transmission. The second email says if the IRS (or state) Accepted or Rejected your efile. And check your spam folder for them.
When you log into your account you should also see the status and if it was Accepted or Rejected, Started, Printed, Ready to Mail, etc. What does it say?
