Re your edit isit seems the Mod did realise this was a bountied question that you wanted closed, however the following still applies
Remember flags are handled fast, your flag message is more of a cryptic clue than an explanatory text. When flagging, always include the following
- What you want the moderator to do
- Why you want them to do it
- If not blatantly obvious: why you can't do it yourself.
So your flag was likely declined because it looks like someone flagging for ♦ moderator attention because they think the question should be closed -- which is usually the wrong flag to use as it goes to the wrong queue.
A more clear flag message would have been:
This question has a bounty on it and so cannot be closed by the community. However it fails the "minimum understanding of the problem to be solved" requirement. If possible could it have the bounty removed and be closed?