Self-hosted register error! License request failed Failed to register community edition: getaddrinfo EAI_AGAIN enterprise.n8n.io

Help! I’ve just installed n8n via docker, and exposing it via Cloudflare. When I try register for a free license key, I’m getting this error:

License request failed

Failed to register community edition: getaddrinfo EAI_AGAIN enterprise.n8n.io