Service Not available for ALB first time

This error is common for AWS accounts, especially new ones, and can occur for several reasons:

1. Account Activation: Your AWS account might not be fully activated yet. Ensure you've completed all required steps including adding a valid payment method, verifying your phone number, and choosing an AWS Support Plan. It can take up to 24 hours after activation for all services to become available.

2. API Throttling: AWS might temporarily restrict your ability to create certain resources like load balancers for new accounts to prevent service abuse.

3. Service Quota Limits: You may have reached the maximum number of load balancers allowed in your account for that specific region, although this is less likely for a new account.

Here are some steps you can try:

1. Wait and Retry: Sometimes these issues resolve themselves after 24-48 hours for new accounts.

2. Try a Different Region: Attempt to create the load balancer in a different AWS region to see if the issue is region-specific.

3. Check for Unused Resources: Ensure you don't have any hidden load balancer resources in other regions.

4. Contact AWS Support: As suggested in the error message, reaching out to AWS Support is the most direct way to resolve this issue. They can investigate and potentially enable load balancer creation for your account.

This appears to be a known issue that often requires manual intervention from AWS Support to resolve. In the meantime, you can continue working with other AWS services that are functioning correctly.
Sources
Cannot create Application Load Balancer — "This AWS account currently does not support creating load balancers" (new account, verified, credits active) | AWS re:Post
Load balancer creation error | AWS re:Post
im not able to create a load balancer in my aws console account | AWS re:Post