siep

OK, problem resolved. I just want to share->

In fact when I posted a comment with my own fb account, it worked but I had a problem with messages let by other people because the messages automatically ended up in the moderation part and not publicly. The problem occured because all the accounts that I used for the test were “fresh” fb account, it means fb account with no friend and no real relationship and Facebook considers automatically this kind of account as spam account.