I finally received answer from College Board.
Hope it helps you too:)
Emailed Steps:
Step 1: Go to Https://CSSProfile.collegeboard.org and click on sign in to apply.
Step 2: Click on sign in 2018-2019.
Step 3: You will be directed to a welcome page and will click on sign up.
Step 4: you will be taken to a page that says Create Your Student Account. In the general student information you will enter the student first and last name, the student gender and their date of birth.
Step 5: where it says Email address in the general student information you will enter your (the parent) email address and you will confirm the email address.
Step 6: After you enter your email address you will go to the next step and select the student High school graduation month and year, the student zip code and the student high school they attend/attended. You will skip the Filter by School Zip.
Step 7: In the username and password section you will create your own username and password and you will choose a security question from the drop down box then make an answer to your question you have picked.
Step 8: you will skip the Subscriptions and Parent Information section and you will click on “I agree with the Terms & Conditions.” And click next. The next page will ask you to confirm your information and then your account will be created. Please note when you are doing the application in the getting started-About the student section. you will see the noncustodial parent email address in the email section for that student, you will remove the email and enter the student email address.