Change DNS IP on Your TV
If Hotstar works fine on mobile data, you can change DNS IP on your TV, as given below. Note that steps may vary based on the make and model.
Navigate to the Wifi menu on your Smart TV.
Ensure that you’re connected to your home Wifi network.
Go to ‘Advanced Wifi Settings’ or ‘Advanced Options.’
Scroll down to “IP” and set it to Static.
Then, change the DNS 1 servers to 8.8.8.8