After you file

Filing in February, doesn't mean you didn't set an April D.Debit date..

I added a picture of what Should be on your MT "Electronic Filing Instructions"

...but that will  only show there if you actually arranged the payment for MT when you e-filed.  Many states don't allow you to arrange a D.Debit with your e-file......and for those states you have to pay separately by check or on the state's own payment website.  I have no idea what MT allows.

 Your "Electronic Filing Instructions" sheet on your tax file will indicate that either way.
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ANNND>  The App doesn't pay...it's a subtle difference, but  you put in your D.Debit account information into your tax file when you submit it...and the state gets it with your tax forms , and then the state does the Debit....if  the account information is correct.

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____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*