system
Given the following post, respond as if you're commenting on Reddit:
human
My slightly complex issue about plagiarism

So I am an engineering major but we are required to take this entry level writing course. I submitted an assignment to Turnitin which was the unfinished version with grammar errors then I asked the instructor is it OK if I could submit the final version with another account since he disabled resubmitting. The similarity rate came up to be a 96% since I basically just corrected a few grammar issues here and there. In his words "Since I was one of his top students so far" he will disregard this and gave me another chance to rewrite the paper but I am pretty certain this will really effect his grading attitude to me from now on. I am not sure if he can still check my first submission's similarity rate and if not, I can't think of any ways to defend myself. Re-writing the thing also will be time consuming in my already busy week, if anyone experienced something similar or have any suggestions about the issue I highly appreciate it.
Edit: It appears since he kicked my first account out of the class he only saw my second 96 percent submission. After I reenrolled my first account the issue was resolved. Thanks everyone for the response/suggestions!
gpt
To be clear, you (essentially) submitted the wrong version of your paper, got permission to submit the correct version and submitted it, and now the professor is considering this an act of plagiarism?

Did you get permission from him in writing? 

In any case, meet with him and ask for clarification. Recap the situation and tell him you’re caught off guard by his reaction.