Are you referring to the bank account on your Form 1040 used for direct deposit? Are you reviewing the bank account information in step #2 of the file menu? If so, you can make changes prior to submitting your return. You can review the bank account used for refund processing on lines 21b & d for your Form 1040.
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Did you ask for your refund to go on a Green dot or other card instead of your bank account?