Like on every other Exchange a verification is necessary, its for the safety of evry user. The Seller and the Buyer, moreover it is required by law to make verify the users via ID or Passport.
Until 200 Dollar or Euro you can trade without KYC, but its always better to proof your idendity to Paramount Dax because on that is proofed that is your Account.
When you try to buy more than for 200 Dollar/Euro the Site go to ask you automatically for KYC.
Or you just go to your Profil, where you find KYC.