Please let me know if there is such a group exists. Please DM me the group invite link or if I have to share my number to someone.

To provide mode details and my personal opinion.
1. When mentioned as A Khata, it means the site is a revenue site. Hence, I recommend you dig deeper into this if it had the Municipal Khata before getting under BBMP. If this is available then there is no problem in proceeding.
2. As mentioned ...

Yes, rightly said.
Last month (July auction) the server stopped working and the auction was extended for another day. They could have communicated this to everyone through a simple SMS, which they are incapable of doing.
During the last auction i.e., August session I was able to bid for a site and ...