I apologize if it takes me longer to respond than usual. I've been having problems with the platform lately, from not letting me log in to only showing the home page without notifications or options on the sides, and sometimes the entire screen being blank. For now, it resolves itself, but sometimes it's like that for days.
It has also happened that when I reply to messages they are apparently sent, but when I log back in, the message does not appear, that is why sometimes you can receive the same message twice