it means that there are no account created to access/protect the Canopy GUI so it's using the default account(which is the administrator) to access it...
It's not about site contact or anything else, your Canopy are still usable and is fine, just ignore it...
for those who can't access the update files because of the expiration error, you can use the ESN of the APs under AP Eval instead of your own Canopy ESN...