If you're having trouble syncing invoice you should check to see if any of your invoices do not have a positive total.
We have a report you can run to check that for you. Here are the steps!
1. Just go to the more tab at the top of the screen to open the drop drown menu.
2. Then click on the reports link to take you to the reports part of the program.
3. Scroll down and click on invoices without a positive total report.
This report will tell you if any invoices do not have a positive total. If an invoice have doesn't have a positive total the system will not sync with Quickbooks. Thank you and have a great day :)