For some reason, they are bagging digital rights for too many telugu movies. I think they are offering lot of money for both Digital and Satellite rights together and trying to fight hard with Amazon Prime. But, Amazon is the only one who provides UHD content for Regional content.
Their customer care is pathetic. They don't even have a clue about this glitch though I tried to explain them.
Dolby audio does not work with Chromecast for this reason. Fire stick and Apple TV have no issues with Dolby audio for SunNxt app. Audio is decent for new releases but for old movies with Dolby audio - you will notice low quality (e.g. Dhruva, Guru etc.)