I'm not too familiar with India's ISPs, are all the players reporting the issue using one specific ISP? If the below suggestion doesn't help you, it would help to see if it's isolated to one ISP, or multiple.
We had a similar instance a few updates ago with an ISP in Canada, and in the sticky
http://forum.supercell.net/showthrea...oad-Start-Here you will find step 12c which helped those folks:
12c) Replace your ISP's DNS server with Google's public server: 8.8.8.8
Make note of what you currently have before you change.
Settings>Wi-Fi>blue ">" symbol after your SSID's name> DNS
Replace your current settings (after you write them down) with 8.8.8.8
If this works, then your ISP's DNS server is not updating in real-time
Here is kind of what we found back then - if you look on your iOS device at the DNS setting, the folks effected last time had their home router's IP in there (usually 192.168.x.x). The problem with some home routers is the way the DNS cache works. With the Canadian issue, the ISP issued the same model of home wireless routers that did not dynamically update the DNS. Having the home router as the DNS would not properly route the game traffic if something changed on the server hosts during the update.
I won't guarantee you this will work - but check that setting on your device. If the issue is related to a DNS problem, changing to Google should identify it. The permanent fix for that would be enter your ISP's actual DNS IP address there, NOT your home router's.
One of the big ISPs in Malaysia had a problem routing traffic many months ago too, but users were able to start a thread on their forums and it was fixed in a week or so, but that was an error with the ISP blocking ports.
And of course, Iran has issue with their country-wide filter at times.
I can tell you the servers are up and running, accepting connections, and waiting to accept connections, we just need to try to narrow down why the traffic isn't getting to Supercell's servers' doorstep.