he is gettin this error message on an iPhone 8 plus. someone did try to add a device that was in use in a different city so he changed his apple Id. He does have two factor authentication.
iPhone 8 Plus, iOS 11.4.1
That error is specific to the specified server, either a DNS-related error or a certificate-related error.
It's arising somewhere between whatever app or tool is reporting that error, and the server.
Depending on the specific configuration, this error can arise either with the specific target server, or potentially a problem with a content delivery network server or caching server being used with the specified target server, or with the DNS configuration for or within the context of the target server, or a problem with the configuration of the target server. It's also possible it's a coding error within the app in use here. How this works depends on both the app and the server in use.
That error can also arise due to the interception of network traffic, either within the context of the client device or within the intervening network between the client and the server.
Some more details, such as more information on the specific app in use here and what sort of connection was intended if not a web server connection would be useful. The specific server is also not reachable from the open internet, so I'm not at all sure whether that domain name is correct and/or if the specified host name was expunged for any of various reasons.
That error is almost certainly unrelated to an Apple ID (and I'd not expect anything related to an Apple ID connection would be attempting to access a claro domain), and is also likely unrelated to the use of Apple two-factor authentication, and is further likely unrelated to this forum; to the Apple Xserve server hardware, Xserve RAID storage hardware, and related hardware.
cannot verify server identity the identity of “hostvvtmt.claro.net cannot be verified. review the certificate details to continue.
