Since access requires authentication, the most reliable way to get a working link is by using tools that log in with your and OTP .
Rather than searching for a single download link that might already be dead, the standard method is to generate your own using your and Registered Mobile Number (RMN) .
Tata-Sky-IPTV-doc offers an "easy way" using an app found in the releases page.
Once you have generated your link or file, you can use it with various IPTV players:
An M3U playlist for Tata Play is a text-based file containing URLs to the streaming servers for various TV channels. Because these streams are protected by Widevine DRM