> People can’t do anything without any information about why they’re blocked. Who do you contact? Where do you go? What to do?

This is the most serious problem with all of the major companies these days. Cloudflare, Google, Apple, etc. When you get on their "bad side", you're just screwed. You'll never even know what got them mad at you, and there's nothing you can do to recover.

The only reasonable way to deal with this is to avoid them all to the greatest extent possible. You have no control over whether or not you deal with Cloudflare, unfortunately, which makes them the worst of the lot.