Webview not present the info

MIT App Inventor Help
2
  1. Remove this block ("Enable") is not javascript

image

  1. I see the same response in the webviewer. The webviewer is probably not capable to show your html/css/javascript. Perhaps try using the Custom Webview extension? (Just tested, it works with Custom Webview)

The webviewer shows all the other pages on your site, there is obviously something going on on the shop page that it doesn't like....