The motor hat is using /dev/tty/usb0. And in Ekos the only devices that load are the Pi cam and the motor hat. I can see that in the message field in the lower section of Ekos. There is no sign of the Celestron NexStar attempting to load. I will look for what you mean with the device manager in Ekos. Not sure where that is.

When you say Device Manager is under Tool, do you mean in Ekos or elsewhere?