I see that you're experiencing the same issue as the original poster regarding paid invoices still sending customer reminders, @Nextlevelhvac. I recommend contacting our QuickBooks Live Support team for a prompt review of your account and assistance in resolving this.
Here's how to contact them through your QuickBooks Online account:
- Click (?) Help on the upper right.
- Go to the Search tab and hit Contact Us.
- Choose Ask about something else.
- Enter your concern and then click Continue.
- Choose from these options: Chat with us, Schedule an appointment, and Have us call you.
Please don't hesitate to comment if you need more help.
