Hi there, @jluros and @RobHere.
I appreciate the time and efforts you've exerted to enable the ACH e-invoice option in your QuickBooks Desktop for Mac. I'd like to redirect you to our best support group available to get this addressed right away.
Since you're still getting errors after performing the troubleshooting steps shared by my peer Jen_D above, I highly recommend contacting our QuickBooks Payments Team again. This way, they can review this issue further and re-open the investigation (INV-48693). They can also provide other troubleshooting steps that can help fix the issue.
For your future reference, you might want to read this article here to learn how you can help customers if they can't pay for an invoice you send them in QuickBooks.
I appreciate your patience while we're investigating this issue. If you have any other concerns about processing payments, feel free to leave a comment below. I'll be around to provide further assistance.
