Amazon AWS account

When signing up for an AWS account, you are required to provide valid credit card information, even for the free tier. If you're experiencing issues, here are some common reasons and solutions:

1. Credit card validation issues: Double-check your card details for typos in the card number, expiration date, or CVV code.

2. Unsupported card type: Make sure you're using a supported card type. AWS typically accepts major credit cards like Visa, MasterCard, and American Express.

3. International transactions: Verify that your card allows international transactions, as this is a common reason for rejection.

4. Card verification: After adding your card, you may need to verify it through the Payment preferences section in the AWS Billing and Cost Management console.

If you've already created an account but it's blocked, check your email for notifications from AWS explaining the reason. You might need to verify your identity by uploading identification documents.

If you continue to have issues, you can contact AWS Support by opening a case under "Account and billing" (which is free of charge) to get assistance with your specific situation.
Sources
why cant i signup for AWS free tier account | AWS re:Post
How can I update my card on file? | AWS re:Post
My AWS ACCOUNT IS BLOCKED | AWS re:Post
AWS community member | AWS re:Post