This is too confusing. What did you get confirmation of? If you efiled you do not print and mail anything. What did you mail with your signature? The Actual 1040 tax return or the extension form?
Then if you filed the 1040 tax return why did the accountant file an extension? And when? Extensions have to be filed by April 15 and gives you until Oct 15 to file the real 1040 tax return.
Do you think you efiled? Was your return Accepted? You can check your efile status here
https://turbotax.intuit.com/tax-tools/efile-status-lookup/
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.
