Process Model (Sub processes are not starting)

Run as designer only controls permissions, not the node type. A subprocess stays Unattended while active and turns Completed only when its instance reaches a valid end node, so yours is likely still running or stuck on an internal node.

Once the subprocess completes by reaching an end node you should see the status as Completed. Inspect your subprocess instances if they have any errors or is paused at a node or is still in progress! 

The "Run as whoever designed the process model" option only specifies the execution permissions for the subprocess; it doesn't affect its status. A subprocess remains in the Unattended state while it is executing without user interaction and changes to Completed only after it successfully reaches an end node. If it's still showing Unattended, check the subprocess instance to see if it's still running, waiting at a node, paused, or has encountered an error.