Weird thing with Cables and extensions with VR headsets two can be indetical specs but only one pf them will work. I have tried high end cables and low end cables and for some reason I find that the cheap cable matters work better. Its rather odd.
Get the latest model adapters, that can support 4K 60Hz. That model you linked to is a 1080P 60Hz adapter (Rift runs at 2160 x 1200 at 90Hz so that is too much bandwidth for the one your got).
What country are you in? I can try to find a cable. However, keep in mind, not every cable will work, so it can be sort of a gamble unless someone has tested that exact cable.