When trying to sync time entries from BillQuick, QuickBooks gives the following error message:
To resolve this issue:
1. In QuickBooks, go to Edit menu > Preferences > Integration Applications > Company Preferences and remove BillQuick application from the list.
2. Go back to BillQuick and try to open the BillQuick-QuickBooks Integration Settings screen. A QuickBooks Application Certificate displays.
3. After giving permission to the BillQuick application to read and modify the QuickBooks company file, check the 'Allow this application to access personal data such as ...' option and click Continue.
This should resolve the problem.