I cant see any way to create a username and password to use with this api

Question

In this example, it asks for username and password param values and I cant see anywhere to actually create these?

curl --get --include 'https://whoisapi.p.mashape.com/whoisserver/WhoisService?password=&userName=&domainName=test.com' \
  -H 'X-Mashape-Key: DmnH0nDx6WmshqyADo8CHHrwJSaTp1X0XLVjsnHvvLW2nJfVYo' \
  -H 'Accept: text/plain'

Whois XML API · Answer

Please create an account at  https://www.whoisxmlapi.com/user/create.php

whois

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I cant see any way to create a username and password to use with this api