After you file

My question is similar except that I paid the $5.00 I owed via DORpay, Indiana's electronic payment system for all personal and business taxes, so there is no bank information on the tax form. I have a printed receipt and a Payment Locator Number(PLN) which was the confirmation provided after making my payment, but the instructions regarding the post-filing coupon are confusing. It says "DO NOT mail ...coupon with payment until your return has been accepted... However, if your return still hasn't been accepted by the due date (today) don't wait. Go ahead and mail your post filing coupon with your payment." They already have my payment. Do I need to mail anything? Will I need to mail anything? The receipt from DORpay has a virtual "post mark date" dated today. How or when will I know whether my electronic filing has been accepted? (This was my first experience filing taxes).