Reactive Account

Hello.

I don't think re:Post will be able to activate a suspended AWS account.
Therefore, I think it would be best to create a case with AWS Support under "Account and billing" and contact AWS, or contact AWS using the URL below.
https://support.aws.amazon.com/#/contacts/aws-account-support/

You can also follow this: https://repost.aws/knowledge-center/reactivate-suspended-account