# Troubleshooting Pixelay
# Not likely to load using production URLs
Important Note: Pixelay is designed to work with local web development builds. For security reasons, any live/production URLs (eg. google.com) are unlikely to load properly in the Pixelay web app.
# X-Frame-Options and Content-Security-Policy
Important Note: Please ensure you're using local development URLs (eg. localhost) or staging site URLs which do not have any X-Frame-Options or a Content-Security-Policy set on your server that will prevent your URLs being loaded as iFrames inside the Pixelay web app.
# Websites using "vh" CSS units
If your website CSS uses "vh" units for any elements, please note that these may appear much taller than they normally would at a resonable browser height due to Pixelay setting the viewport height to be the same as your full Figma mockup.
# VPN may be required in China
Please note, if you're in China, the license server may be blocked by "The Great Firewall of China". If you're seeing a license error, despite using a valid key, you will likely need to use a VPN to resolve the issue.