This question already has an answer here:
I guess the question 'how many 'decined flags' do a user get to make' is pointless, so, what are the consequences, if any, of getting too many?
How does the system calculates declined flags (n declined flags in n days/weeks/months?, or a ratio? or something else?) before the user sees the message:
Attention: some of your recent flags have been declined - please review them before flagging this post!