Probably not as simple as that. Do you have a credit card on file and did you authorize a limit? Where does openai say that you get 5$ of usage free?
I found this. I recommend you visit the 'your billing settings' link and' usage tracking dashboard' and see what it says about your account. Start a conversation with openai .to discuss your issue.
Did you try the things mentioned above? and still did not get the ai to work?
You can set a monthly budget in your billing settings, after which we’ll stop serving your requests. There may be a delay in enforcing the limit, and you are responsible for any overage incurred. You can also configure an email notification threshold to receive an email alert once you cross that threshold each month. We recommend checking your usage tracking dashboard regularly to monitor your spend.