WebIOPi is not our product. The best place to get info about getting it running is at:
The other thing to know about those instructions is that the "Weaved" package described there is VERY old and not compatible with remot3.it. My suggestion is to stop before doing the "Install Weaved" part, and install the weavedconnectd Debian Package (assuming you are using Raspbian) by running:
sudo apt-get update
sudo apt-get install weavedconnectd
And then installing a web (http) service on port 8000, if I remember WebIOPi details correctly.