When SimpleCloud creates the render farm, it adds a system-managed user to the render farm management software. This user allows SimpleCloud to issue instructions to the farm. If you delete the user, any queries you make will stop working, for example,you will be unable to check the status of nodes in real time.
When SimpleCloud creates a render farm, it adds a system-managed user to the render farm management software. This user allows SimpleCloud to issue instructions to the farm. If these requests are not working, it could be due to someone deleting the system-managed user.
If the system-managed user has been removed, you will need to either reinstate it in the farm management software (if possible) or create a new render farm in SimpleCloud.