We are currently working with our provider to fix the native casting. Apologies for the inconvience.
As a work around you can mirror your screen using the Chromecast app on Android or cast a tab from your chrome browser on your PC/Mac/Laptop.
Google Chromecast Help
- PC/Laptop/Mac - Cast a Tab - Click here
- Android Chromecast App Mirroring - Click here*
*Android 4.4.2 or higher
Unfortunately casting from iPad/iPhone is not available at this time until hopefully our provider fixes this issue.