The main reason for the vinyl not sticking to the transfer tape is the direction that it is being removed. Think of it as removing the liner paper as opposed to pulling the transfer tape. You can’t simply pull the tape away and always have the vinyl stick to it. You have to work from the back (liner) side and pull or roll the liner away at a 180 degree angle. It’s recommended to first pre-squeegee to apply pressure and promote the adhesion of the transfer tape to the vinyl material itself right before installation. Then remove the liner paper from the transfer tape.