APIは手動で動作しますが、AI(Grok/xAI)はVPSに到達しません

My forum (www.enit.hu) runs on a rented VPS (Ubuntu, Discourse Docker). I am the only admin, the forum is private.
Goal: Write/read via Grok (xAI) API so that conversations get eternal memory (infinite context).

You have:

xAI API (purchased token)
Discourse API key (user-level, adminjozsi, scopes OK)
manual curl GET/POST 200 OK, post created

None:

Grok can neither read nor write
According to network logs, no requests are coming to the VPS (ngrep/tcpdump is empty)

Settings checked:

enable_api_key_auth, api_key_required_for_private_messages etc. OK
rate limit 0 for new users
firewall (RackForest) 80/443 open
Discourse container log: nothing from AI

Why is the request not reaching the server? AI-side limitation or Discourse error? Thanks!