I can no longer use bluestacks, failed to register and it asked me to contact whatsapp directly.

More to it, very strange on my n9, that one day, I realised that the message I sent didn't show properly, and so I deleted wazapp, and since then I couldnt' really re-install wazapp, and last night I tried and including this morning, the failing reason is - fails-old-version, but I have downloaded the latest from Cepi's and it doesn't make sense to me by this reason - old version!!! I deleted and re-install different versions, it just doesn't work at all, my goodness...anyone can help???????

When i open wazapp, it failed to open, and I did the tricks which helps me to reach the registration page, here is what I did....I take out my sim card then open up wazapp, it comes to registration page, then i insert my sim back again for registration..if anyone struggles to open wazapp, it could be a solution for you.