Whatsapp

[Filbert]

Hello all. I posted this in technology but no answer just as yet... I have a wildfire s and have the popular whatsapp. I keep receiving messages that I need to update it as the current version will expire, but everytime I try to do it, it says that download was unsuccessful. I have sufficient memory available but it just won't do it. Does anyone have any ideas what it could be or how to solve the problem? Thanks in advance...I only have 24 hrs left. (i have been trying for a week!!)