Why is there no Customize link for my site?
The customizer works with sites that use a theme built on the Theme Engine, such as Vitrine 0.6 or later and Confetti (Vitrine 0.4 and 0.5 work too). Check the site's Theme page. The link is also hidden from users who may not change the site's theme settings.
I have Vitrine Studio. Do I need Design Studio?
Design Studio is Vitrine Studio's new name, and it also works with Confetti and other new RefBytes themes. Install Design Studio, then uninstall Vitrine Studio: your drafts carry over.
Why do visitors not see my changes?
Changes in the customizer are a draft until you click Publish. Only you see the draft.
I published on the theme settings page while I had a draft. What happens?
The theme settings page saves its own form. Your draft stays as it was and still shows in your preview; publishing it later overwrites the settings with your draft's values. Discard the draft if you no longer need it.
The status line says my session has expired. What do I do?
Reload the customizer page. Your draft is kept: everything you changed up to the last saved change is still there.
The preview shows a page without my changes.
The page left preview mode, for example after following a link that a script built without the preview parameter. Click Close, then open the customizer again, or use the browser's Back button inside the preview.
The preview area stays blank.
The preview shows your site in a frame. If your web server or a security module sends X-Frame-Options: DENY or Content-Security-Policy: frame-ancestors 'none' on site pages, browsers refuse to show them in a frame, even on the same site. Allow same-origin framing instead (X-Frame-Options: SAMEORIGIN or frame-ancestors 'self'). Open in new tab still works meanwhile.
Can two people customize the same site at once?
Yes. Each person has their own draft. Whoever publishes last sets the site's settings, including settings they did not change themselves, so agree on who publishes.