My WhatsApp works, why do I have to restart my BlackBerry every time to receive messages?

If anyone can tell me how to fix this problem it would be amazing! Please, I am desperate!

Which phone are you on, its OS, country and carrier?

Helalzone

Same issue on OS 7.1 with 9220. Whatsapp process is being killed because of memory leak and so whatsapp is not sending nor receiving messages ...