Can you confirm what OS and browser you are using, and cofirm what issue you are having. Can you post a screenshot. The site has been up and running continously. In Chrome try opening 'View / Developer Tools / Javascript Console' and then right-click the refresh button to select the 'Empty cache and hard reload' option.

Also try both of these URL: https://play.openacousticdevices.info https://playground.openacousticdevices.info