Could they be using an older, unsupported browser? I tried loading the URL in a Windows XP virtual machine. Using a somewhat up to date version of Firefox, the URL loaded successfully. Using Internet Explorer 8, the URL was unreachable.
Only other thought I have: Is the server located on your Local Area Network, with the domain forwarded to your WAN IP? Your router could need a loopback enabled to access the URL while behind the router.
IP address won’t work with HTTPS for several reasons:
https requires a SSL certificate where the hostname matches the certificate. When you try via IP address, there is no host name
many servers do not have dedicated IP addresss, so many servers are running on the same IP. Which server is used is determined by SNI: Server Name Indication - Wikipedia
[quote=459129:@Richard Albrecht]@Greg O’Lone
Any thoughts on this?[/quote]
Jason is going to contact you directly to get some more site specific information so I can take a peek at it.
There’s a lot of non-standard traffic being directed at his Xojo Cloud server and our firewall doesn’t allow that. If this is not something that they can/will correct, we can whitelist the specific IP address for him.