Get your taxes done using TurboTax
First, you paid for preparation. E-filing is never guaranteed, and often beyond Turbotax's control. You can still use the return you paid to prepare by printing and mailing it.
Second, even if you could e-file, you would be considered late unless you obtained the normal extension online before April 15. To claim the automatic overseas extension, you must file by mail and attach a written explanation. See the instructions here.
So what you need to do is, use the dummy SSN to pass the program checks, then print your return. Cover the dummy SSN with some white-out (or black it out I suppose), and then write "NRA" on the line where it says "If treating a nonresident alien spouse as a resident, enter their name here" (this is a slight update from older instructions). (See picture.). Then mail the package to the IRS, probably using a shipping service with tracking and proof of delivery.
