Update from my situation. Those instructions were indeed to technical for me, so I didn't know how to do that.
Dev helped me only with the first 2 commands and than I didn't get any reply from him anymore.
Last answer from him is from 28th may, so 40 days ago and he is still holding my 2 BTC worth of PDC.
If there is anyone else who can help me, let me know.
Edit: just got a reply from him now ... he just forgot about me last month