Symptom
- Empty box where form should render
- Browser console shows CSP or frame errors
Common causes
- Content-Security-Policy blocks iframe or scripts
- Wrong publicId or inactive form
- iframe height zero or overflow hidden
- Ad blocker blocking embed domain
Fix
- Copy fresh embed from Forms → Embed panel
- Allow frame-src and connect-src for flowforce.app in CSP
- Set min-height on iframe container (e.g. 600px)
- Test in incognito without extensions
Still stuck?
- Embedding guide — /docs/pipeline/forms-embed/
- Submission errors — /docs/troubleshooting/forms-submission-failed/