It happens

More than you know lol

I sincerely doubt it's personal. It also sometimes depends on what you said in the message, whether or not they even saw it etc. lots of reasons there could be for this. They could even be like me and either take their time responding to messages, and also have their boxes HEAVILY filtered so most people end up in requests which doesn't show a notification. You have to look in your inbox and specifically notice that it's there. There's also a third box called "other" messages. Which also leaves no notifications. 🤷🏾 Could be anything. I guess try again, 4 isn't that many people. Good luck

I havent tried

I don't really pm much ...

Yep, total silence