You do not amend the tax return. Amending is a special process you use if the tax return was filed and fully processed with missing information or a mistake. Your return was not filed at all--it was rejected. That means the IRS did not get it or process it in any way. Do not click on anything that says amend.
You can go back in to the 2018 return and make corrections to the SSN that was wrong and then you can print it, sign it and mail it. But in order to make those corrections you have to use downloaded CD/download desktop software on a full PC or Mac. If you already paid your fees for the rejected return then customer support will provide the download. If you did not pay, then you have to pay to get the downloaded software to complete your return.
https://ttlc.intuit.com/questions/2559403-how-do-i-finish-a-prior-year-return-that-i-started-in-turb...
If you already paid for your online software you can ask customer support for a download of the desktop software.
They are available from 5 a.m. to 5 p.m. Pacific time Monday-Friday.
https://ttlc.intuit.com/questions/1899263-what-is-the-turbotax-phone-number
If you are getting a refund, there is no penalty for filing late. If you owe tax due, then file and pay the amount due as shown on the Form 1040, but expect a bill later from the IRS for the penalty and interest you will owe. Only the IRS will calculate this—TurboTax will not calculate it.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
