Simple Donations and Progress Bar Updating

Hello,

I'm trying to use the simple donation feature but the progress bar is not updating when i make a donation in live mode. i have already setup the IPN and paypal shows that there is notifications being sent. Any ideas of what could be wrong?

I am also getting this message after i make a donation "Oh No, we can't find your Pledge. Sometimes it take a few moments for your Pledge to be logged. You can try refreshing this page"

Thanks,
AP