Why are you censoring websites?

I think by reading the above it is clear there are many devices and protocols between you the client and the resource you want to access and none of us can fathom every step of that or at what second of any minute things may change.

So hopefully you have it now

Thank you, and basically: Yes. But one thing puzzles me... why does it work at one time and an hour later it will not? Given the same vectors? Also.... who is it that authorises something like cloudflare to prevent me from accessing websites. I was just contacting a dutch government site, the health ministry, and cloudflare told me that was suspicious, and did not let me through at first. I suppose the realistic question is: Who pays cloudflare for such "services"?

Depending on the site you're connecting to, it might be the same for years, just the route to it is different every few minutes… to big site operators that spin hundreds of short–lived nodes around the world and you basically never connect twice to the same one/state. So while users may claim "to be using this news/mail/ticker site for ages without a problem" truth is these probably ship changes multiple times a day, run multiple versions in parallel, and serve different routes for guests vs. logged in accounts etc. so nobody really sees the same thing ever again these days, engineers just put effort into this being as seamless and invisible as possible.

As to who contracts the security providers — the site operators. So either the corporation or government and/or their IT department, or, contractually, their web services vendor or platform provider. Usually to protect costs, security and availability thresholds at an agreed level without disruptions. At the cost of collateral damage of false positives.

Thank you, yes that sounds like a reasonable explanation. I asked here in the forum, because the offered Link on the Error Page goes to Firefox/Mozilla and the explanation given there tells me something else. It is simply upsetting when people, who claim to be worried about my security interfere, like cloudflare does, and there is no way to contact those interfering. And what is the insulting part, there is not simply a button that allows me to override and tell my computer by myself what it does and what not. Sometimes the basically identical Error notice appears and at least gives me an override button, but all too often it does...

FYI I checked specifically for the site in question here — it's not run on a global cloud, but is only available from a single location in Eastern Germany — so depending where in the world you're located, network–wise, the route might be vastly difference, as is the number of subjects relaying the content for you. Below is a comparison from France vs. New York:

Thank you, or your effort... And why does that work almost all the time, only sometimes, it will not? I am ALWAYS coming from a VPN server in Tokyo. What difference would it make, if I use one in Eastern Germany?