Cant change Payment method

It sounds like you're having trouble changing your payment method in AWS. This issue can occur for a few reasons:

1. You may not be logged in with the correct account credentials. To change payment methods, you need to be logged in as the root user of the AWS account or have the necessary IAM permissions.

2. If you're using an IAM user or role, you may not have the required permissions to access billing information and make changes. By default, IAM users don't have access to the AWS Billing console.

3. You might be logged into a linked (member) account in an AWS Organization instead of the management account. Payment methods can only be updated on the payer account that manages billing for the entire organization.

To resolve this:

1. Ensure you're logging in with the root account credentials (email and password) for the payer account.

2. If you're an IAM user, you may need to have your permissions updated. The account administrator needs to enable IAM user access to billing information.

3. If you're still unable to access the payment preferences, you may need to contact AWS Support for further assistance. You can open a support case or request a callback from AWS billing support.

Remember, it's crucial to keep your payment method up-to-date to avoid any service interruptions. If you continue to experience issues, don't hesitate to reach out to AWS Support directly for help with your specific account situation.
Sources
How to update payment method my root account? | AWS re:Post
Change payment method | AWS re:Post
Alert emails for subscription termination while I struggle to change the payment method | AWS re:Post