Before you start complaining that bounty managers change bounty rules after bounty ended or KYC was later implemented do you read the bounty rules and regulations?
Many bounties have already says it all in their rules and regulations that 'THE BOUNTY MANAGER HAS THE RIGHT TO CHANGE RULES AT ANY TIME' when you see something like that always know that anything can happen ,the one way to avoid this is if there is no such rules on the bounty thread.
Bounty hunters still find it very hard to read,they care less about rules and go for the good looking bounty allocation, please have patience and go through rules and regulations ,most times its not always the bounty managers fault.
Judging from your post you have not yet experienced the many things that these bounty managers and developers are doing just to keep delaying payment to their bounty hunters or worse do not pay at all, check DESICO's example, this project reached their soft cap, because of the help of bounty hunters, after that they shift to STO and announced that they are not going to pay their bounty hunters because they changed their rules, all they can give their bounty hunters is thank you.