Amazon Transcribe - The AWS Access Key Id needs a subscription for the service

I created an AWS account 6 days ago to test ‘Amazon Polly’ and ‘Amazon Transcribe’. I'm running the tests using ‘AWS Management Console’ for now. Ultimately using the PHP SDK. The problem is that while I was able to access ‘Amazon Polly’ without any problem and test the functionality, I can't do it with ‘Amazon Transcribe’. From the very beginning when I enter the ‘Amazon Transcribe’ service and select ‘Create a transcript’ I get three red comunicators ‘The AWS Access Key Id needs a subscription for the service’ on the screen above the window with the ‘Start streaming’ button. When I click the 'Start streaming' button, I additionally receive below it a communique with the error 'SubscriptionRequiredException The AWS Access Key Id needs a subscription for the service'. Using ‘Amazon Q’ he suggested: 1 - Changing the region. I tested all available regions. Including us-east-1, us-east-2, us-west-1, us-west-2, eu-central-1, eu-west-1, eu-west-2, eu-west-3. 2 I should ‘subscribe’ to the service. By navigating in the ‘AWS Management Console’ to the ‘Amazon Transcribe’ service, I should see an ‘activeate’ or ‘subscribe’ button. Nothing like that appears to me. I have the ‘Create a transcript’ button immediately available. 3. checking if my account is fully activated. I found a re-sign formula that, without completing anything, tells me that the account is activated. 4. checking payments and billing. I am using ‘Free Tier’. I have completed the company data, billing data and have a verified credit card plugged in. 5. User and role verification. The ‘Amazon Transcribe’ functionality behaves the same whether I use the ‘root’ or ‘iam’ account with broad permissions. I have already lost dozens of hours on this. I've searched the internet up and down the length and breadth using Google, DuckDuckGo, ChatGPT, Copilot, Gemini and have found nothing to help me fix this. Has anyone encountered such a problem? How to solve it?