New Organization Account setup - need quota increase for number of accounts

I understand your frustration with the quota limitation on your new organization. Let me help clarify the situation and provide guidance.

For newly created accounts and organizations, you may experience a quota below the standard default of 10 accounts. This is a common occurrence with new organizations. The maximum number of accounts quota is adjustable, but there are some important points to understand about requesting increases:

Regarding the regional issue you're experiencing: AWS Organizations is a global service with a single endpoint in us-east-1 (US East N. Virginia), regardless of which region you're working in. When requesting a quota increase for AWS Organizations, you should make the request from the us-east-1 region, not us-east-2. This is likely why you're encountering the error in the Service Quotas console.

To request your quota increase, you have a few options:

1. Service Quotas Console: Navigate to the Service Quotas console, ensure you're in the us-east-1 region, select AWS Organizations as the service, find the "Maximum number of accounts" quota, and submit your increase request with justification explaining your multi-account architecture needs.

2. AWS CLI: You can use the request-service-quota-increase command to submit your request programmatically.

3. AWS Support Case: If you continue to experience issues with the Service Quotas console, you can open a support case specifically requesting an increase to your AWS Organizations account quota.

Be aware that quota increase requests typically take up to a couple of days to be reviewed and approved. Support will evaluate your request and may approve, deny, or partially approve it based on your account's history and the justification provided.

In your request, be sure to mention that you're setting up a multi-account architecture following AWS best practices and need to bring existing workload accounts into your organization structure.
Sources
Request a quota increase - AWS Control Tower
AWS Organizations endpoints and quotas - AWS General Reference
AWS service quotas - AWS General Reference