I value your feedback and understand the possible effects this issue could bring to your customers, @SuzieQ11.
Allow me to step in for a moment and share with you some updates about the current investigation with invoice reminders.
The INV-51047 is still open, and our engineers are now trying to figure out the possible reason for this behavior to get a fix as quickly as possible. In the meantime, you can temporarily turn off the Automatic invoice reminder feature for QuickBooks not to send reminders automatically as suggested by Mark_R above.
If you wish to send reminders to your customers manually, you can follow these steps:
- Open your QuickBooks Online account, then select Invoices from the Sales tab.
- Pick the invoice/s from the lists, then tap on Send reminder under Batch actions.
I also recommend getting in touch with our Support Team to stay current with the latest updates of this investigation.
Please feel free to leave a comment below if you have any other questions. I'm more than happy to help. Have a great day!