Problem with WhatsApp

I'd read about it before but will request that once. When someone send a voice message to me on Whats app, I can not listen to it. why! why!!?? I double-tap at the message and nothing happens :( It's likely when I will send a voice message, I can not hear it too. now whats app sucks!!!!!!!!

Forum: 

#1 A known problem

There's a recent discussion about this problem elsewhere in this forum: http://www.applevis.com/forum/ios-ios-app-discussion/whatsapp-and-voice-messaging-it-accessible