Hum, that is pretty much what I got before when I was using Internet Explorer (& what I should be getting) so I don’t see how you showing me what I use to & should (still) get helps.
Furthermore, you telling me that they “are dynamic pages that respond differently in different browsers or in different regions”, “may also exist on load balancing servers which might not always be up to date” makes any sense. How do “Browser extensions may affect how they are rendered” when it is the same site? It doesn’t make any sense for what you see to be any different from what I see. You say “If there is an error fetching content it may provide useful information that helps you understand what has happened or it might instead be a generic message that is much less helpful, such as a ‘We'll be back’ message when the site isn't down for everyone.” but I am not getting anything else at all….it goes straight from:

scroll down to
than
so how is what you are doing any different from what I’m doing? Quite simply, it isn’t! I am getting this the same exact way you are getting yours so why am I not getting the same thing? That in itself is the problem!
For what it is worth I am using Firefox Quantum 60.0.2 but you doing whatever you say you’d do doesn’t give me any answers! Heck, I have already chatted with Apple on my iPad & asked why I can’t get to them on my PC when I can’t very well chat with them on the device that needs support & they can’t tell me anything so how is whatever you are going to be any better/different then what I’ve already done?
[Edited by Host]