Cloudflare is blocking one website for the rinconbeach.com hotel. Error 404.
Can't get past it on Firefox, no problem with any other browser.
Soluzione scelta
This website only works via HTTP and not via secure HTTPS. If you use https://www.rinconbeach.com/ or Firefox forces https:// then it fails with a domain error and it you override this error then you get the Cloudflare 404 error page.
So you need to open http://www.rinconbeach.com/
Firefox insisted for some reason in using HTTPS and with a lot of effort I was able to identify this as caused by "network.trr.mode = 2" (TRR first).
Setting network.trr.mode to 0 or 1 allowed me to open http://www.rinconbeach.com/
- about:config => network.trr.mode = 0 (off) or 1 (parallel/fastest)
You can open the about:config page via the location/address bar. You can click the button to "Accept the Risk and Continue".
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Soluzione scelta
This website only works via HTTP and not via secure HTTPS. If you use https://www.rinconbeach.com/ or Firefox forces https:// then it fails with a domain error and it you override this error then you get the Cloudflare 404 error page.
So you need to open http://www.rinconbeach.com/
Firefox insisted for some reason in using HTTPS and with a lot of effort I was able to identify this as caused by "network.trr.mode = 2" (TRR first).
Setting network.trr.mode to 0 or 1 allowed me to open http://www.rinconbeach.com/
- about:config => network.trr.mode = 0 (off) or 1 (parallel/fastest)
You can open the about:config page via the location/address bar. You can click the button to "Accept the Risk and Continue".
If you have enabled HTTPS-Only mode then you need to create an 'Off' exception.