Having issues with your transfer tape not picking up the vinyl? The reason is quite simple. It's because the tape you used is either a low or medium tack. Why not choosing high tack ones? High tack tape can transfer the vinyl easily but it may leave residues on the vinyl surface especially for holographic vinyl and mirror chrome vinyl. Or it may be to strong and not release the vinyl when you try to apply it.
The advantage of using low/medium tack transfer tape is reducing the chances of leaving residues on decals.