No you should be fine, as long as you signed the tax return you will be ok and the date won't change anything.
Will I get an email to confirm that my letter was received?
I am dumb (foreigner) and used DD/MM/YY instead of MM/DD/YY i am worried bc i have little time to file my 2020 and 2021 taxes will it be ok?!?!
The date you entered will not affect the processing of the return. The system captures the date submitted also.
To check your e-file status, sign in to TurboTax, and go to Tax Home (if you're not already there). If you've submitted your return, you'll see a pending, rejected, or accepted status. If you haven't submitted your return yet, you'll see Let's keep working on your taxes! and sections like Personal Info and Income & Expenses.
Your e-file status is different from your refund status. If you want to track your refund, go to Where's My Refund.