to give further information, ive reset my os on my pc, before this there was no issue, ive changed quite a few settings, no proxy, 1.1.1.1 and 8.8.8.8 as dns, turned off security features and such, it worked fine til i tried to actually download PIA's app on their website, issue being that it simply states it cannot connect, this is a fresh install of firefox, ive done it for all the other major browsers, they had zero issue initialising the download, its just firefox thats serving a server error, which is wrong, there is no server error, the site works, the download installer works, its literally just firefox doing this,

Sorry for the stream of conciousness going on here, apparently firefox is collaborating with ISPS? Now that ive enabled the VPN by downloading from a different browser, this issue resolves, which is extremely odd, my network on windows 11 was already set up by my configuration, such as DNS defaults, this is proven by me doing this on other browsers.

I'll get specific, why is firefox commandeering my network connection and blocking sites? IF I enable my vpn, this is no longer and issue, when i turn it off it serves me a connection error, the other browsers work whether the vpn is off or on.

Your browser is blocking access, this comes across as censorship

Firefox is colloaborating with ISPs in an optional way to block sites, VPNS are not illegal, why is this now a thing? Is this IP 6 prioritising? are you changing my DNS protocols despite me manually changing them in settings?

This could be many things but it comes from your software exclusively

Is the irony that this browser prides itself on privacy and security lost on the people developing it? What I've seen here is the antithesis of privacy and security, chrome and edge refer to the system settings to resolve paths, firefox is using https over doh which means that its referring to your isp to resolve websites, not your system settings.

Did a bit more digging, IPv6 may be the culprit, if it fails, chrone and edge refer ti ipv4 for lookups, in firefoxes case it fails because my isp wont route or has blocked this ip range, thus your broswer serves up a server error when thats not the case, I want to stress how frustrating that is, does firefox not use ipv4 as a secondary lookup incase ipv6 fails?

No, DoH is used also (mainly?) for hiding the queries from ISPs: https://support.mozilla.org/en-US/kb/firefox-dns-over-https#w_benefits

That article has the steps to check whether it's active, how to opt out etc. — but more importantly it's assumed the fallback mechanism works, so not being able to connect, and not falling back to the OS resolver is a bug — please do file one on bugzilla with OS, versions, URLs etc. so somebody can try to reproduce it.

For the privacy details you might want to check https://wiki.mozilla.org/Security/DOH-resolver-policy to see there's no snooping from your ISP.