Hi
If you already have FracPad III, you don't need another license, only if you still use the Fracpad 1.xx.
For the Axefx III, you can connect via usb directly or via a yamaha md-bt01 / cme widi for Bluetooth operating.
For the FM3, you'll need an usb midi adapter like Roland um-one for wired operating, or a yamaha md-bt01 / cme widi for Bluetooth operating
Kind regards,
Alex