resource failed to load

Hi! I have NO idea why... but I'm getting this error on some images...

resource failed to load the certificate for this server is invalid. It is possible that the server you are connecting to pretend to be www.ambidiextro.es, which could jeopardize your confidential information

The thing is, my domain is .com, not .es... actually, I don't use .es .. I don't know why nopCommerce is trying to load the product picture from a different domain..

any ideas??

Thanks!!

ok.. I just clear cache and restart the app and it's working now... but I'm worried... why would this happened??