Have you booked the testkit?
After doing the scan then only can you see which equipment you need.
Also if you read the Getting connected it says:
DO NOT PURCHASE ANY EQUIPMENT WITHOUT KNOWING EXACTLY WHAT YOU ARE BUYING AND FOR WHAT.
Under no circumstances will CTWUG be liable if you purchase equimpent you can't use or that is incorrect for your use. It is solely your responsibity to be 100% sure before buying anything.