Help - BBM

I've had my blackberry for 3 weeks and the BBM has been working fine and all of a sudden today it stopped working. I can't send or receive messages. I deleted my BBM then reinstalled it and now I can't add people as in they don't receive my invite. I've turned my phone off a bunch of times, taken the battery out, deleted and installed it once. Not really sure what to do

national BIS/BBM issue right now

Yep. Messenger is down nationwide. Check the Blogs.

when you have data issues its usually 1 of 2 things resend the service books or a bis outage