New portal for scheduling appointment :-
https://www.usvisascheduling.com/en-US/
(https://www.usvisascheduling.com/en-US/)
Steps :-
1. Signup First ( you need sign up again and create username and password. Username can’t be email id or should have @ sign .
Email id has to be same which you had used before )
2. Verify email id
3. Create account
4. Select three security questions and answers
5. Login
After this you will be able to see your existing appoin