the Chat did something wrong to buddy press.

Since I installed it, all buddy press profiles can have access to other buddy press private profile. And I can directly connect without having to give a password. Also, I could not have anyone's list. And from a day to another, I did not have any chat. So I reinstelled, but my chat signal on dashboard disappeared and there was no profile list and i could communicate with everybody and every body could see message. Could you please help me?