Tried logging in aws through this.
But I keep redirecting to this page https://portal.aws.amazon.com/billing/signup?redirect_url=https%3A%2F%2Faws.amazon.com%2Fregistration-confirmation#/start
The password and credentials is correct. Because first I entered an old password and I got password incorrect and had to reset the password.
Tried loggin in in-cognito as well. Still no luck.
Not able to sign in. Where have I gone wrong? Please do help.
Guess 1: you haven't completed the whole sign-up procedure:
Follow the prompts and it will take you through the account setup process.
Guess 2: you are logging in with incorrect root account email. Double check that it's indeed the one you used for signing up before. The registration emails should show the one you signed up with.
Guess 3: browser caching problem. Try logging in from “incognito” / “privacy” mode in your browser or from a different browser.
(based on the comments below) Guess 4: something else is broken :) Sign up with a different email address and once you've got a working AWS account go to Support -> Billing/Account support and work with AWS Support team to either regain access to the other account or to bring the original email address over to this new one. Billing/Account support is free and doesn't need a support subscription.
However I don't see why signing up under a different email would be a problem. But that's up to you how much trouble you're ready to go through to use the one and only email address you decided to use. It may be far easier to just use a different one.
Hope that helps :)