Whisper not working

For some reason, my whisper has not been working the past couple of days. I am able to send them, but I am unable to receive them. I have not touched any of my chat settings, and whisper is still enabled. So I'm not sure what the issue is. Any solutions?

Maybe its some addon. Other person can send you whisper as normal, but you can only see what you write? Sounds like some "ignore list/chat filer" addon or something like that.