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Mission impossible? ManyChat & Meta CAPI Integration Issue on New Account – "Something went wrong"

  • January 8, 2026
  • 0 replies
  • 11 views

DustinKowalski

Hi everyone, I’m looking for help with a persistent issue connecting ManyChat to the Meta Conversions API (CAPI). The integration is currently failing to send events to Facebook Ads.

Situation & Context:

  • Account Age: Both the Meta Business Portfolio and the ManyChat account are only 2 days old.

  • Timeline: The CAPI integration was initially successful and fully functional. However, after deleting the integration and attempting to reconnect it 10 minutes later, the process began failing consistently.

  • Error Messages: During authorization, I receive the generic UI message “Something went wrong” or a specific API validation error

Steps Taken to Resolve:

  1. Session Cleanup: We completely removed the ManyChat app from the “Business Integrations” section of the personal Facebook profiles of both administrators to reset the connection/handshake.

  2. Manual Connection Method: We attempted the manual connection method in ManyChat (With dataset and token) using a fresh Access Token generated directly in Meta Events Manager.

  3. Permissions Logic: During token generation, we selected the “Set up without Dataset Quality API” option to minimize permission-related conflicts common with new accounts.

  4. Role Verification: Confirmed that both admins have “Full Control” over the Facebook Page, Ad Account, and all relevant Datasets.

  5. Partner & Routing Config: Verified “Partner App” permissions and “Conversation Routing” settings within Meta Business Suite, ensuring ManyChat-IG is set as the default receiver.

Despite these efforts, the integration continues to trigger API data validation errors. Has anyone experienced this kind of “freeze” on a new account after a rapid delete/reconnect cycle? Could this be a specific rate limit or an "eventual consistency" issue on Meta's infrastructure?

Any insights would be greatly appreciated!

I’ve been trying to resolve this with a ManyChat teammate, but I’ve been waiting for a response for over 48 hours now.