I am getting an invalid Cert error when trying to preview a UI builder page for my app. It was working a few minute ago

I am trying to preview my UI Builder page via the preview button. It was working up until a few minutes ago and now I get this error from my browser:

# Your connection is not private
Attackers might be trying to steal your information from


appID 99E92E98-03EE-03C0-FF0A-C36386E46200

Could you please share the URL of the page?

Hi Mark:

I tried it on phone and desktop. This is the certificate information I am seeing:

What browser/OS are you using?

Chrome/Windows & firefox/windows.

I figured out what’s going on. When I am on my client’s VPN. I get that error. When I disconnect from the VPN then I can access the site no problem.