Just paying the fees does not file the return. Did you continue on and go all the way through the File tab, through the 3 steps and hit the big orange Transmit Returns Now button?
For the Online version 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. Accepted only means they accepted your return FOR Processing. Not that your return is right.
How to Efile
https://ttlc.intuit.com/community/e-file/help/how-do-i-e-file-my-personal-individual-tax-return/00/2...
You need to verify your ID with the 5 digit Pin from last year or last year's AGI
https://ttlc.intuit.com/community/security/help/what-is-my-signature-id/01/27224
Your 2018 AGI is on 1040 line 7. It will be on the first page.
How to find the AGI
https://ttlc.intuit.com/community/agi/help/how-do-i-find-last-year-s-agi/00/25947
