You likely have a driver conflict. Open Device Manager and look for "Unknown USB Device." Uninstall it, then power cycle the cutter (turn it off, wait 10 seconds, turn on) and reconnect.
The current version includes all the power of v2, plus:
The edition unlocks:
Download for macOS 10.10 or higher (Compatible with M1/M2 Apple Silicon). Installation & Trial
To download and install SignCut Pro 2, follow these steps:
As technology evolved, the software grew from a simple utility into the robust SignCut Pro 2 Suite