But as mentioned in the previous page, it doesn't look like they're operating as an instant exchange anymore. It's just fiat (INR) <> crypto app now and they recently launched "CoinSwitch Pro"[1] which acts as an aggregator for CEXes (Indian ones only) and is meant for arbitrage trading.
[1] https://www.entrepreneur.com/en-in/news-and-trends/coinswitch-pro-launches-its-multi-exchange-trading/439758
Initially they had a main account that got banned for some reason, and then they decided to use a couple of Alt accounts as reps, but they would still not resolve issues amicably, or they would just ignore the complaints
Maybe the ban made them abandon the forum.
But despite that, they all started being popular in here though the main market of theirs is no longer gonna come from here.