Community License Activation Fails: "Failed to send license to user"

Hello n8n team,

I have set up a new self-hosted n8n instance and I am unable to activate the community license. My setup is fully functional and accessible via HTTPS on a custom domain.

The Error:
When I try to activate the license, I consistently receive the error:
License request failed. Failed to register community edition: Failed to send license to user

My Setup:

  • Cloud Provider: Oracle Cloud Free Tier

  • OS: Ubuntu 22.04

  • n8n Version: Latest (via Docker)

  • Deployment: Docker Compose

  • Reverse Proxy: Caddy for automatic HTTPS

Troubleshooting Steps Already Taken:

  • My instance is fully accessible at https://n8n.gilalexander.com.

  • OCI and local iptables firewalls are correctly configured for ports 80 and 443.

  • My n8n docker-compose.yml has the correct N8N_HOST and N8N_PROTOCOL=https environment variables.

  • I have completely reset the local instance by deleting database.sqlite multiple times.

  • The error occurs when registering with my original email ([email protected]).

  • The error also occurs when registering with a brand new email alias ([email protected]) that has never been used with n8n before.

Since the error persists even with a fresh database and a new email alias, it strongly suggests the issue is on the n8n backend, possibly a stuck state associated with my domain.

Could you please investigate on your end and clear any potential blocks or stuck registrations for my domain?

Thank you for your help!