I'm not able to fill my federal tax return by mail, the option is not available, and the e filling is falling any idea ?

[whiteramtwo]

I like this option because it gets there faster than mail and easy to use

[VolvoGirl]

Did you select to have the fees deducted from your refund?  You have to change that and pay the fees upfront with a credit card.

How to switch to mail from Efile     https://ttlc.intuit.com/replies/3401713
How to remove the Refund Processing Service charge   https://ttlc.intuit.com/replies/5007885

[tiger4brave]

After you pass the Review, under the "FILE" tab, click "Print/Save for Your records" and save a PDF on your computer as a record.  Then "Print" a copy for your records.  You can file your tax return with the documents you print out.