Log in Issues - AWS Management Console

Please can someone help? I created a business AWS account earlier this week for my team to set up an SFTP. For some unknown reason, a few days later i am unable to sign into the account. When i try to sign in as a Root User, i receive the message 'Signing in with the root user is disabled for your account. You need to re-enable this feature.' When i try to recover my password, i receive the message 'Password recovery is disabled for your AWS account root user. You need to re-enable this feature.'. I can't seem to access the Support Center, as whenever i try, i am taken back to the login page. When i try to sign in as an IAM User, i receive the message 'You authentication information is incorrect'. When i click on 'Forgot Password', i receive the message 'Account owners, return to the main sign-in page and sign in using your email address. IAM users, only your administrator can reset your password.' I am literally going round in circles and can't seem to find a way into my account. Can anyone help? TIA