I wish you didn't have to go through this error, CRH2488.

As of now, we have an ongoing investigation about getting an error message when sending invoices to your customers. I understand that you've already contacted our QuickBooks Support Team, but I'd recommend reaching out to them again. This way, you'll be added as one of the affected users.

Here's how:

1. Go to the Help (?) icon at the top.
2. On the Assistant tab, click Talk to a human.
3. Enter INV-70915 in the Type something field, then click the send icon.
4. Choose the I still need a human button.
5. Click Get help from a human.
6. Select the Chat with us or Have us call you option.

Rest assured that you'll receive an email update once the issue is already resolved.

Additionally, I've included this article that'll guide you in personalizing your invoices in QuickBooks Online. This helps you add the info that matters most to your business: Customize Sales Forms.

I appreciate your understanding on this matter. Please know that we're determined to get this resolved.