Since you are using a Mac (at least to ask this question), you have to get the 2015 amend software for Mac from TurboTax Customer Support as a download. You don't have to pay for the software. And also download your *.tax2015 data file from your 2015 Tax Timeline.
I see you are using Mac OS X 10.7.5. It may work OK on that, although it prefers a higher OS version (v. 10.9 or higher.) See this FAQ about TurboTax 2015 if installed on v. 10.7.5:
https://ttlc.intuit.com/questions/2920594-what-happens-if-i-install-turbotax-2015-on-mac-os-x-10-7-o...
To get a phone number for TurboTax Customer Support, fill out the small form at the link below. Enter a short question or a few keywords. You will be assigned a phone number based on your issue. The phone number will not display when they are closed.
FAQ: What is the TurboTax phone number?
https://ttlc.intuit.com/replies/3300041