I try to participate on the airdrop from bountyhive it's like 9 airdrops but none of them I received , so I never go back to that site anymore and now I know why I am not able to received . Stay away from that site if you feel they are just going to use you .
have you done a report to their team about what you have experienced? of course on their site there are still shortcomings and it is not possible this is a system error. and we should be able to understand it
I think inform to the team regarding this and lets see what they respond is more suggested.
As we know, system could not be perfect and a chance to have error or bug is exist. So we never know what will happen without explanation.