Everyone must belong to an organization, even if they're the only member.
After you sign up and confirm your email, we require you to either create or join an organization. It's required, because almost everything in Jahuty belongs to an organization. And, the things you can do in Jahuty are determined by the organizations you belong to and the role you're assigned.
To join an organization:
As a member of an organization, you're assigned a role that determines what you can do on behalf of the organization. When you accept an invitation, you're assigned the contributor role, which has limited access to things like invitations, API keys, etc.
Now that you know how to join an organization, learn how to manage API keys.