Cannot cast from Tablo to Chromecast

I haven’t gotten an answer on the phone all morning and I need to know what is the matter, I can’t cast. I can from all other suggested sites but not Tablo. I am using my Safari to try because the app will not cast. Also, is it going to use internet just to cast live TV? Thank you all

Chromecast for Tablo is only available for Android devices and PCs. It sounds like you are trying an iOS device, which is not yet supported.

You will hit the internet very briefly when you use a PC or Android device (it makes a request to, but it doesn’t need the internet to stream to a Chromecast.