Hi, Charlie. Let me help you clear things out.

Currently, the link to download the ACH form is still unavailable. 

Right now, our engineers are still checking the root cause of the issue.  In the meantime, you can contact the QuickBooks Payment Team to ask about other options on how to access the ACH form.

You can click this link to reach out to them: Contact Payments or Point of Sale Support.

For future reference, you can read through this article if you want to learn the process and take payments in QuickBooks Point of sale.

You can always come back if you have additional questions about the ACH form. We'll be happy to help. Have a great day!