The email had the instructions needed to amend the return IF your return needs to be amended. What tax year and what needs to be corrected ? The email should also have a specific phone number to call for assistance if needed.
See this TurboTax FAQ for help with amending:
https://ttlc.intuit.com/questions/1894381-how-to-amend-change-or-correct-a-return-you-already-filed
