I am having this same issue and was told the same thing about some phantom engineers that clearly can't fix anything!  Over 3 years after this thread people are still having the same problem, seriously??  I have an existing employee that has not been filling out timesheets but need to start.  I get the same error message telling me to try later.  Meanwhile I'm able to add 2 brand new employees with no problem.  I did the help/contact us/call me option only to be transferred after the first person couldn't help to someone with the "engineer" script.  She supposedly added me to INV-57949 but I'm not holding my breath.  Quickbooks - we have work to do and this is not it!  Please help!!!