If you experience technical problems using gpvdm (i.e. it won't install etc..) please leave a message for me on github here. Or if you prefer drop me an e-mail. I'm very happy to provide help in using gpvdm. There are also a few how to videos dotted around the gpvdm web page that will show you the basics. On the other hand if running simulations is not your thing, I am also more than happy to collaborate with you on modeling data.