If you continue to have problems, you can print and mail your extension to the IRS. If you need to make a payment with your extension you can mail a check with your extension or you can make an online payment. To download Form 4868 go to: https://www.irs.gov/pub/irs-pdf/f4868.pdf To make a payment, go to https://www.irs.gov/payments
For help with filing an extension in TurboTax see the following FAQ:
https://ttlc.intuit.com/replies/3301811
