I'm here to help you get the support you need, Yoohoo.

This type of concern requires your information to review your account and identify the reason why the ACH E-check transaction is rejected. Since the QuickBooks Community is a public platform, it would be best to get in touch with our actual support team to handle this in a secure environment.

Here's how you can reach us:

1. Go to the Help menu at the upper right.
2. Select Contact Us.
3. Enter your concern.
4. Click Let’s talk.
5. Choose Get a callback.
6. Type in your contact info.
7. Select Confirm my call.

You can check out this article for our contact information. Click on the QuickBooks Online (QBO) drop-down to see the most updated support schedule: Support hours and types.

Also, do check our Help articles page in case you want to learn some best practices on managing your QBO account. From there, you can read great articles that can guide you in your future tasks.

Know that you're always welcome to post here in QuickBooks Community if you have any other concerns while processing ACH transactions.