I can confirm I’m experiencing the exact same issue with Hostinger VPS.
Same setup:
- n8n behind Traefik
- Valid HTTPS/SSL
- No firewall rules configured
- Ubuntu on Hostinger VPS
Same error:
(#2200) Callback verification failed with the following errors: curl_errno = 56; curl_error = CONNECT tunnel failed, response 429; HTTP Status Code = 429; HTTP Message = Too Many Requests
The frustrating part is that it works intermittently - sometimes the webhook verification succeeds (usually on 2nd or 3rd attempt), but even when it activates successfully, incoming WhatsApp messages don’t trigger the workflow executions consistently.
I’m planning to open a support ticket with Hostinger requesting they whitelist Meta’s IP ranges. @henryford did you already contact Hostinger support? If so, how did you frame the ticket? Any specific information or approach that worked better to get their attention on this?
Also, has anyone tried the Cloudflare proxy workaround yet? Considering implementing it while waiting for Hostinger’s response.