Witches Wedding

I'm having very poor success rates taking clones from this plant. Using AC Infinity dome, rock wool, rooting gel, a heat mat and Olivia's cloning solution. Very new to growing but not my first time. I've had very good success rates with portions of the above methods using OG Kush and White Widow, over 80 percent root rate. I'm hoping to get cloning advice. I just topped the main stalk today, added gel and put it directly into soil(Fox farm Forest, bio char, perlite, coco coir mix) this is my 3rd or 4th grow and I'm adding to the substrate each time.