Bug bounties have a purpose and it is not to generate press or to be an equality outreach program. It is to find bugs.

If the rules are getting in the way of what the organisation is actually trying to use those rules for, then to be a stickler for rules is nuts when the same organisation wrote the rules in the first place and can change them at will.

edit - and if it is neccessary due to corporate legal waffle to always be a stickler for rules, then make a rule that details the protocol for exceptions.

Someone at your company should probably be thinking about Prezi's reputation. That person should probably have a discussion with whomever is running the bounty program.