Where do I go to edit the business name on the subject of reminder emails. It has our company name incorrectly listed in correctly- were can I change it?

I'd be glad to walk you through how to edit the company name of your reminder emails in QuickBooks Online, @shellye.

If you want to modify the subject line of your invoice reminders, you can follow the steps below:

1. Go to the Accounts and Settings.
2. Click the Sales menu.
3. Select the Reminders pencil icon.
4. Choose the Default email message for invoice reminders or turn on the Automatic invoice reminders. 
5. Tick the reminder and enter the new company name from the Subject line.
6.  Hit Save and Done.

I'll add this screenshot for your visual reference:

To know more about this process, check out this article: Send invoice reminders automatically or manually in QuickBooks Online.

Once settled, I have a guide here to help you account for your customer payments in the future: Record invoice payments in QuickBooks Online.

We're more than willing to help if you have any other concerns with invoices or transactions in QuickBooks Online. We wish you the best. Stay healthy always.