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.
This is problem. They reserve the right to change the conditions. But you understand that by doing so they can lower the price to introduce KYC and do whatever they want. Working conditions must be accurate.