Hi, I'm from India too and I just wanted to say that I've been having the exact same problem too with the same error code all day. My Internet seems to be doing fine too i'm able to connect to everything else normally

Unable to complete version check. [30605][20447][20526] is what i keep getting whenever i try to turn on the launcher

But so far have been unable to find a fix, tried uninstalling and reinstalling the game however the launcher still gives me the same error when I am trying to re install the game and so I cant even re download the game anymore

Out of curiosity what was the vpn that you used that fixed the problem? I might try it out. Thanks in advance for the help ^^

(P.S. I already tried out cloudflare’s DNS and it didn't work for me sadly)