I think that should be fine, coz we're not mentioning anyone's name
Though I'm bad at explaining..but I'll try it
If you want to PM someone, then go to you inbox, select the person you want to PM from your buddy list, then enter the subject n content n then send it
If the person you want to msg is not in your buddy list, then either search for him/her in the search bar or go to any post of that person n then select the PM option
Hope it'll help😊