We have 2 zonedirectors ZD302, one is being used as standy backup. We renewed our certificate and at first everything seemed fine. But when people login to our guest wifi and when they are being redirected to the portal website, they get the message that the website is not safe and the certificate is invalid. But when I type in the guest portal url in the browser of my laptop, I can access it just fine.
What is the problem here?