The IRS is backlogged and behind in many ways. It is entirely possible that your return has not been processed yet, so you will simply have to wait and watch your account for the payment to come out of your account. You filed and paid it before the deadline of July 15, 2020, so you are fine.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**