I am having the same issue, though it's while just trying to enter the account number on a new return, not updating. (And no, I am not trying to incorrectly update my routing number.) I have entered/re-entered my account number a half-dozen times and the screen just keeps refreshing to say "Please verify your account number has been entered correctly." I've entered the digits one at a time; I've copied and pasted the entire number directly from my bank account screen; nothing is working - I am stuck trying to get my account number entered.
