If QuickBooks Merchant Services isn’t syncing, check for internet connection issues or incorrect settings. Ensure QuickBooks and your system software are up-to-date.
Verify that your Merchant Services account credentials are correct. If the problem persists, try restarting QuickBooks or reinstalling the software to fix any syncing issues.
https://help-quickbooks.alboompro.com/post/a-detailed-manual-on-qb-merchant-services-and-its-error
