At present one person can use multiple accounts in Bounty camp in but it was not like this before so is the quality of our work decreasing day by day I request moderators and those who are in higher position to control this work
If you are running a bounty campaign, as a manager it's you're job to ensure that your campaign is clean by checking your participants, and it is not the job of the moderators to help your campaign.
You've just told us that you are a weak and incompetent manager because other managers do not have this kind of request, or better stop being a manager if you cannot do your job properly, I don't know why you say that it was not like this before, there's a lot of cheating even in the early days of bounty campaigns.