Hello!
This is not an issue, so there's nothing to be sorted out for any user. Various apple.com subdomains, such as advertising.apple.com and banners.itunes.apple.com, are blocked by the "Ads & Trackers block list", which is a merge of public lists not compiled by us. Please remember that we do not add blocks by ourselves whatsoever. The blocks do not seem to affect Apple Store, though, as confirmed by other users at the moment. Please be aware, however, that Apple may block access to Apple Store from VPN and Tor. This happened already in the past, even to ProtonVPN, so we can't rule out that some of our servers are already blocked by the Apple Store.
If you don't think that Apple advertising is advertising or anyway the list disturbs you, you should not enable this anti-ads list, or you can add exceptions. When you click "LIst", all the blocked domains are shown. Quickly search for "apple.com" and you will see immediately which subdomains are blocked. You can also propose some other block list against advertising which does not block advertising by Apple, if you can find one.
Kind regards