AppsGetting startedFAQs and TroubleshootingFrequently Asked Questions Can I use a framework (like React or Vue) to develop my extension? How can I test my Designer Extension? Can I update my App after it's published to the Marketplace? Troubleshooting Guide My App isn't showing up in the Webflow Designer. I can't view/update my App credentials including the Client Secret. I can't upload a new version of my App Bundle. My App isn't interacting with the Webflow Designer as expected. I'm seeing errors in my App, but I'm not sure why. My App looks different in the Designer than I expected. If you continue to face issues, don’t hesitate to reach out for support.