If this error comes up when trying to import timesheet hours into QuickBooks:
"Could not add time for task "x" on job "x" - employee is not matched in QuickBooks"
It means that you have not matched your employee properly in the LMN/QB sync application.
Please open the application and make sure steps 1, 2, & 3 are connected and complete. In step 4, go to where you match employees from QuickBooks to LMN and drag that employees name from the QB column to the LMN column (left to right).
Once matched, please try the Time sync again and it should work for you.