To sign up, follow the steps below:
Navigate to platform.vvaciot.com.
On the login page, click Create an account (below the Sign In button).

On the Create Account page (platform.vvaciot.com/register/), enter your Name and Email Address, then click Sign Up. If you already have an account, click Sign in to go back to the login page.

A Check Your Email confirmation screen appears, letting you know an email with an OTP and a link to set your password has been sent to the address you provided. Click Back to Login to close it.
Open the email and click the link. This opens the Reset Password page (platform.vvaciot.com/resetpassword/).
Enter the OTP from the email, then enter your New Password and repeat it in Confirm Password. The password must include uppercase and lowercase letters, numbers, and special characters.

Click Reset Password. You'll be redirected to the login page, where you can sign in using your email and password.
Note: Registration is now a single Name + Email form (the old separate username field and in-page verify-code step have been replaced — verification and password setup now both happen via the link emailed to you).