To run Dorico Pro as either Dorico Elements or Dorico LE you still need a valid license to be available on the computer at the time you run the application, and if your eLicenser isn’t plugged in, then unfortunately no valid license is available. However, in future there’s in theory nothing to stop you from putting a Dorico LE license on your computr’s Soft-eLicenser, so Dorico would run as LE when no USB-eLicenser is connected, but would prefer the Pro license when your USB-eLicenser is connected. However, Dorico LE isn’t currently generally available, though you can expect some news on that front in the relatively near future.