There are places, though few of them, where they don't have aerial photographs, but that should be covered in the coverage map.
IF you are getting inconsistent results at the website, BCN will get them too. It is likely that there are intermittent problems on one of their database servers or something.
You cna report problems at
tsmailbx@microsoft.com. Another person reporting something similar never got a response from them, but they did resolve the problem within a week or two.