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You shouldn't spam the same nomination multiple times. Submit it once, wait for the decision, then see if it needs submitting again.
As for why it doesn't appear, it's likely in the same level 17 S2 Cell as an existing Pokéstop or Gym, but because you've censored the location, it's impossible to check for you. Each of Niantic's games has proximity rules that limit what can show up in that game. Your acceptance email states as much:
So,I just have to let the place be show to see what’s wrong with it,Or I’ll have to do something else ?
You can just go check yourself. Go back to the location of your nomination, open Pokemon GO and try to create new Pokestop nomination but stop when it displays nearby map. If you see any orange ! symbol in the map then try click it, if it's your accepted nomination then sorry but you have to accept the reality that your accepted nomination won't appear in the game.