Hello!
I have paid for the subscription and enabled billing, but the API key is still not working.
What should I do to activate access to the API so that the key starts working?
Welcome to the Forum,
Please verify if the billing account is properly attached to the project using the API key. Billing must be active and linked in the Google Cloud console. Google AI Studio offers a lightweight interface to your Google Cloud projects at https://aistudio.google.com/projects
For further assistance, we recommend contacting the cloud billing support team, as they are best equipped to help you Get Cloud Billing support | Cloud Customer Care | Google Cloud
Thank you!