Starting Point - Shield

Hi there,
I’m pretty new to pentesting & I’m having issues with rooting the machine Shield within Starting Point. I don’t know why but whenever I try running the Juicy Potato code from the target machine back to the netcat listener I specified on my attacking machine, I can never create the reverse shell that’s supposed to give me Admin privileges. Any help would be greatly appreciated!
I have looked up & down various other forums & videos but I still can’t quite understand what exactly I’m down wrong. I have ensured that my firewall allows the incoming connection on the port specified. I have downloaded the binaries specified.