UPDATE:
This issue has been resolved.
NEW ISSUE:
We had a minor system failure on Monday, September 3rd. One of our spider servers became unresponsive, and was unable to complete a crawl of approximately 30% of the keywords in the queue.
If you see some of your rankings marked as N/A today, they are among that 30% of keywords that didn’t get crawled.
We have brought all systems back online and your keywords will be crawled during the next 24 hours.
Your keyword rankings that appear as N/A will be updated as soon as the ranking data becomes available.
Don’t hesitate to reach out if you have any questions.
Rob, and the STAT Team.