Auth0 website & custom app login not loading?

I’ve been experiencing an issue on an iPad Mini (iPadOS 16.5.1) where the auth0 website is not loading. An error is displayed saying a secure connection could not be established with the server. I am able to load other websites though. The login link we use for a mobile app is now returning a ‘Your connection is not private’ error, NET::ERR_CERT_AUTHORITY_INVALID. On closer inspection, the certificate seems like it should be valid. Other (non-iPad) devices do not seem to have any of these issues. Any ideas what’s going on here? Thanks

I’m seeing this on the Apple iPhone now as well

In case anyone else is experiencing the same thing -
Seems to be a network/firewall issue related to Safari from iOS 16 (versions 16.6 and 16.3.1 also were not working for me). There ended up being a few other websites that would return the same error, such as google.