Reply To: Can't send message to a user Home › Forums › Front End PM PRO › Can't send message to a user › Reply To: Can't send message to a user April 8, 2018 at 12:50 pm #13138 Shamim HasanKeymaster Do you have any custom code for this plugin in your website? Also tell him to again check his settings page for those 2 options ( “Allow others to send me messages?” and “Blocked Users”). By default only this 2 options can output this error.