It seems not just a matter of the number of reward that makes people reluctant to participate, this is a Giveaway exchange
reward will be paid to our account on the Hydax Exchange
This event will not be able to attract new users ...
is it true that they did not pay participants who had joined this project some time ago, so in addition to exchanges that were less interested they also did not do justice to bounty participants. You should discuss this in the thread
https://bitcointalk.org/index.php?board=129.0