Ok ... are you using the refund processing service to pay the TT fees from the federal refund ? If so the number on the form 1040 will be the temp account at the processing bank and not your account number. Your account number is entered in the FILE tab when prompted for use by the processing bank once they get the IRS refund deposited. So it that is what you are seeing stop trying to change it.
If not then contact TT support for assistance :
See this TurboTax support FAQ on how to contact Support - https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-contact-turbotax/00/26991
