Loading StandardFirmataWifi to MKR1000

Hi all, first time seriously using Arduino. The project I'm trying to replicate is this one.

I am running it on a company network (don't worry I got the go-ahead from IT), but that doesn't seem to be the issue. I've managed to get npm install to run, the issue comes when I try to run npm start, I get this message:

Unable to connect!
Make sure you have the latest StandardFirmataWifi sketch loaded on the MKR1000

I've already started the project over from scratch... twice... and nothing else I've tried seems to work.