The Gateway is up but replies never arrive What should I check

Start with a quick health sweep:
openclaw status
openclaw models status
openclaw channels status
openclaw logs --follow
Common causes:
Model auth not loaded on the gateway host (check models status).
Channel pairing/allowlist blocking replies (check channel config + logs).
WebChat/Dashboard is open without the right token.
If you are remote, confirm the tunnel/Tailscale connection is up and that the Gateway WebSocket is reachable.
Docs: Channels, Troubleshooting, Remote access.