You cannot e-file it now. You misunderstood what you read. "Support" cannot e-file it for you. Print your return, sign it in ink, and mail it.
When you mail a tax return, you need to attach any documents showing tax withheld, such as your W-2’s or any 1099’s. Use a mailing service that will track it, such as UPS or certified mail so you will know the IRS and/or your state received the return.
When you mail your tax return, wait about 4 weeks and then check the IRS site
You need your filing status, your Social Security number and the exact amount (line 20a of your Form 1040) of your federal refund to track your Federal refund
https://www.irs.gov/refunds