If my Maine taxes have already been accepted with E-File and I owe funds, how do I pay them? I remember signing up for a direct payment, but I still have the funds.

It takes awhile for your taxes to be processed. If you did a direct payment from your bank account, it will be processed. Be patient

Check the printout or PDF of your return; look for the state cover sheet with the Turbotax logo.  If you owed tax, it will show the payment information and how/when you decided to pay.  Read the state payment instructions carefully since most states cannot be paid from within the TT system and requires additional steps.

https://ttlc.intuit.com/questions/1900884-what-are-my-options-for-getting-my-state-refund-or-for-pay...