The error is really a reminder that NCM doesn't support Account limitations.and applies if you have a MSP-like environment. for example some of my users can only see the 'K20' network devices, but no others. They don't have access to NCM, but if they did their jobs would be able to access all nodes.
So, the error with your job not running is something else -- you will need to provide some troubleshooting of that (windows event logs, etc).
I suggest a support case