Our terms for all clients are "Due at time of service" So basically no terms. However the due date on invoices defaults to 14 days. How can I fix this?

Hello there, Masra.

We can change the preferred invoice terms so it will not set to a Net 30 invoice terms. Let me show you how:

1. Go to the Gear icon and select Account and Settings. 
2. From the left menu, click Sales.
3. Select the Sales form content section and clear out or select a preferred invoice term. 
4. Click Save and then Done.

Changes will take effect on future transactions. For more details on how to customize your invoices, you can check out this article: Customize invoices, estimates, and sales receipts in QuickBooks Online.

I'm just around the corner if you need more help. You take care always!

Thank you it was set as "due on receipt" but I removed that and left it blank I will see how that works.