Hi. You won't actually use the 1040 to file your taxes, but use it (and include it in your return) to do the calculations for the IRS for the credit. I would recommend printing out and mailing your return. Please get back to us if you have further questions.
Additional information -- Turbotax does not actually offer the 1040NR in our line of products. Here's who can help you.
https://ttlc.intuit.com/questions/2437638-does-turbotax-handle-form-1040nr-for-nonresident-aliens
