I appreciate you bringing this concern to my attention, @natethepoolman.
I can help share some information about sending a replacement invoice to your customer so they can have another payment.
You'll need to create another invoice for your customer since the merchant payment was voided. This way, they'll be able to receive another invoice and have them pay the balance by hitting the pay now button.
Here are great articles that you can refer to about these process:
If you need additional with these steps, I'd suggest reaching out to our Customer Care Team. They have additional tools like screen-sharing that can guide you with the process.
This should get you going today.
Please let me know if you have any other questions with this concern. I'll be around to help you out. Enjoy your weekend.