I'm here to provide some information why your recurring invoices are not sent, @greg.

Let's ensure that your recurring invoices are set to Scheduled and has not reached its End Date. 

If the issue persists, let's perform some troubleshooting steps to fix this. There are times that the browser is full of frequently accessed page resources, which causes some errors or unusual responses. Let's start accessing your account using a different or a private browser. You can use either of these shortcut keys:

• Google Chrome: Ctrl + Shift + N
• Mozilla Firefox: Ctrl + Shift + P
• Microsoft Edge: Ctrl + Shift + P
• Safari: Command + Shift + N

Once you have successfully sent the invoice, go back to your regular browser and clear its cache. This is done to speed up the process next time you do a transaction in QuickBooks Online. Also, an alternative way is to use other compatible browsers.

Otherwise, we can also delete and recreate the recurring template that has an issue. Here's how:

1. Proceed to the Gear Icon.
2. Select Recurring Transactions.
3. Find the template that stops from working.
4. In the Action column, choose Edit.
5. Take note of the recurring invoice details. You'll need it when recreating the template.
6. Return to the list of Recurring Templates window.
7. Click New.
8. Enter the invoice details.
9. Click Save and Close.

Once completed, let's delete the template that has a problem.

1. Go to the recurring templates list.
2. Locate the template.
3. In the Action column, click the Edit drop-down.
4. Select Delete.

Then, you can start to sent the invoices again to your customers.

I'm also adding this link to help fix recurring transactions that has issues: How to handle a recurring transaction that did not run.

Fill me in if you have other questions about handling recurring invoices that are not sent. I am always here to help you. Keep safe!