I’m sorry to say that there has been an issue with the PayPal payment system. PayPal is no longer notifying us about transactions which is leading to a delay or failure of crediting SlideShare for Business accounts on our site.
We’re very sorry about this and are working to fix it ASAP. In the meantime I’m manually crediting people’s accounts. If your account hasn’t been credited yet, please contact us via http://www.slideshare.net/business/feedback
This has been fixed. However, if you still have any issues, please still use the feedback form.