IPhone to blackberry not working bbm?

I downloaded BBM for iPhone last nite and it wouldn't send messages so I deleted it and I'm trying to get bbm back on my blackberry but it won't work, every time I click on the bbm icon on my blackberry it says your bbm contacts have been restored and other stuff, then it goes off onto my home screen, I then click on the icon and my phone freeze's, I've tried rebooting and going onto the options screen and the link that say personalisation and privacy for BBM it's not there it's only the one for blackberry app world WTAF!

Tke it to phone shop