From the The PostRank Team :
We recently made an update to our system, which now requires PostRank Connect account holders to have at least one RSS-enabled website verified in their accounts. Until that action is completed, Connect account holders won't be able to fully access their Connect or Analytics accounts. Fortunately, verifying a site can be completed in a minute or two.
At the same time, we discovered a bug that had the same result — un-verifying members' websites and requiring them to re-verify at least one existing site, or add a new site and its related information and verify it. We're really sorry about that, though the bug has been fixed. Unfortunately, we can't re-verify sites for Connect account holders.
All the information about how to verify a site is in our blog post: http://blog.postrank.com/2011/01/why-you-may-need-to-re-verify-your-postrank-connect-websites/
If you run into any issues, or have questions, please let us know.
Again, our apologies for the inconvenience.
The PostRank Team