You do not need to untie that stopper knot. Remove the carabineer from the prusik, and unwind the prusik. Then clip on the Ropeman and feed your carabineer through there.This is the knot below the prussic.
We've all been there. Never be afraid to ask questions. I can't tell you how much help this forum has been to me. Once you get your gear assembled, practice, practice, practice. It all takes a little getting used to. Season 2 for me and still learning. Gets a little easier every time. Get comfortable with practice before going afield and you'll be glad you did and safer.Thanks for the assistance. This is all new for me and clearly a work in progress.