bounty not paying the attendees is a thing very much happening since the beginning of 2018 until now probably already 70% bounty just cheated all participants for months, it seems the admin should limit the bounty manager so that everyone no longer experience a grief about payment
Like Daneel.io, their community managers in their Telegram Channel aren't that honest and they're not willing to give rewards to their bounty participants which are helping them to their success and promote their ICO to attract more investors in this forum.
They are one of the best example for how bounty campaign managers and community admins are handling issues.