You can see your content using the Facebook/Twitter Share code available in the "Publish Settings", copy and paste this in your browser URL and your content will show up.
You can also paste this share code into your Twitter or Facebook post and the player is going to appear directly.
The "preview" is also really useful to check if your content is online. It is located under the "description" tab once clicking in your VOD or live channel
The embed code showing up in the publish settings of your content can also be pasted into the code of your website and the player will be implemented automatically.
Dacast also has a viewer page located here : https://www.dacast.com/viewer/ where end users could watch different contents uploaded on dacast.com