My extension/payment rejected 2 hours after the filing deadline going through TurboTax. Will I still be liable for late fee and will my extension be allowed by mail?

I have already filed a request for extension and paid my taxes paid my liability estimate through IRS.Gov and next time will do that instead of using Turbo Tax.  I want to know If I submit the 4868 with the email evidence of the rejection after deadline and the payment made as soon as discovered.