Use a custom Facebook app for classic signup
KickoffLabs dashboard exposes Pages & forms → Shared settings → Custom Facebook signup app. If your plan includes it and you already use a classic Facebook signup button, this page accepts your Facebook App ID and App Secret. Treat the secret as a credential and use the callback/permission values shown for your actual app; do not rely on an archived screenshot.
The tested KickoffLabs form picker did not provide a Facebook signup button. Saving a custom app in KickoffLabs does not create one on a KickoffLabs page. Before changing an existing classic campaign, test signup with a Facebook account you control, check that an email and lead were created, and verify the app’s current Meta permissions. The KickoffLabs button path remains a product gap. No app credentials were entered in the local review.
Need help? Email support@kickofflabs.com with the campaign URL, integration, and result of a synthetic test. Keep API keys private.