Incorrect mailing address by mail for MO1040? The mailing address on printout instruction sheet is different from what is ask from the bottom of he form MO1040?

hard to know for sure...the Actual MO 2020 instructions say on page 2:

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If your form has a 2-D barcode, mail your return to the Department of Revenue address as indicated below:

Refund returns: P.O. Box 3222, Jefferson City, MO 65105-3222

Balance due returns: P.O. Box 3370, Jefferson City, MO 65105-3370

Refund returns claiming a property tax credit: P.O. Box 3385, Jefferson City, MO 65105-3385

Balance due returns claiming a property tax credit: P.O. Box 3395, Jefferson City, MO 65105-3395

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(  https://dor.mo.gov/forms/MO-1040%20Instructions_2020.pdf  )

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For the manually-entered paper forms...without a 2D bar code, it is:

Refund or no balance due:  Missouri DOR,  PO box 500, Jefferson City, MO 65105-0500

Balance Due:  Missouri DOR,  PO box 329, Jefferson City, MO 65105-0329