I just got my tax return using Turbo Tax. Then I realized that I am non-resident alien (1st year) in the States. What should I do with my file and the money?

I already got the tax return last week and my friend told me that we are not allowed to use turbotax to e-file if we are non-resident alien. Can you advise how I should amend my application and what action should I take to resubmit my files? It's quite urgent and thanks a lot!