Hi Folks,
I'm afraid there is a bug here - the Graph UI is not giving a clear and appropriate error message.
The reason for the prompt is that Graph requires a trial or a Platinum-level license (see our subscriptions page for details on what else is included), and the bug is that it doesn't give you a clear message about this in the UI.
If you are a customer, please reach out to our support team, and we can issue you a trial license. If you are not a customer, we're happy to issue you an extended trial license - just email info@elastic.co and our team will send it over!
Once the trial license expires, you can re-install your original gold or basic license.
Thanks,
Steve