This occurs under the following conditions...
1. You are offline.
2. You have blocked any of these:
> 127.0.0.1 dev.epicgames.com
> 127.0.0.1 api.epicgames.dev
> 127.0.0.1 et.epicgames.com
> 127.0.0.1 et2.epicgames.com
> 127.0.0.1 udn.epicgames.com
> 127.0.0.1 etsource.epicgames.com
> 127.0.0.1 metrics.ol.epicgames.com
> 127.0.0.1 datarouter.ol.epicgames.com
3. You have an Epic account linked to your Steam account. Note that Rocket League will automatically create a random Epic account if you've played it since it migrated to Epic.