I am the developer of the SteelDrive II hardware.
From what I read, the device is working with TheSkyX, AstroImager and also via INDIGO.
So I suspect your terminal settings might not be correct yet.
In order to rule out a specific malfunction of the "GET VERSION" command, please try:
We can be sure this must return
as it is a command necessary for the other drivers to work, which you have proven.
Also please make sure to update your device to the latest firmware: