My feedburner Stopped Updating

I noticed my feedburner has not been updating since 10th June 2013. I have tried to troubleshoot all to no avail.

Each time I try to ping the Feedburner I get this message “Your Ping resulted in an Error “We were unable to process your ping. You must ping with a URL that exactly matches the channel link (RSS) or alternate link (Atom) in your top level feed element pointing back to your website (e.g https://myblog.blogspot.com/), or use your feed URL (e.g. https://feeds.feedburner.com/myuri).”

I don’t know what could be responsible for this and how to get it corrected. I am using the FD feedburner Plugin.

Thanks