We have received reports that some users have problems with the "Try Me" tab. There is no impact to the Solace Cloud messaging service.
Codepen requires verification for some users in certain regions of the world.
The workaround is to first head over to https://codepen.io
and verify using their captcha (I am not a robot, checkbox). When you reload the service page on the console, the "Try Me" tab will start working again.