Hi have problem with invoices

Hello @expresstimberltd,

In QuickBooks Online, invoices can be automatically closed for a reason only if the customer's name has available credits. Let's turn this feature off to avoid closing your invoice with paid status after saving them.

1. Go to the Gear icon.
2. Under YOUR COMPANY, select Accounts and Settings.
3. Choose Advanced.
4. On the Automation section, select the Pencil icon.
5. Remove the checkmark on the Automatically apply credits selection.
6. Select Save.
7. Click Done.

On top of that, I've also included this reference helpful with the resources needed while working with your sales and money-in transactions: Topics about your company's income and customers.

Don't hesitate to post again here if you have other questions or concerns with QuickBooks tasks and navigations. I'm always around happy to help. Take care and stay safe!