Recently I attempted to login to https://console.aws.amazon.com/ to check over my bill and usage. After resetting the password and logging in, it had the error:
Bad request There is something wrong with your request. Clear you cookies, check your request, and try again. If this issue continues, contact AWS Support.
Clearing cookies had no impact, so I choose to chat option. AWS support found that it was the fact that my Amazon prime and AWS shared the same email, and request that the prime be moved to a different account. After this, logging into AWS worked fine.