Solved
My CPA said that I can't use TurboTax service as a non-resident (H1B holder), but I know many of my friends who are in the same status are just using TurboTax. I would like to confirm whether I can use the service or not. Thank you so much in advance!
TurboTax doesn't support the filing of a 1040-NR.
However, you can use Sprintax to complete a 1040-NR:
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