> For whatever reason, I must have done something that angered Cloudflare
I'm guessing: having an IP address close to (or outright reused from and thus identical to) someone malicious, whom you know nothing about.
I'm guessing: having an IP address close to (or outright reused from and thus identical to) someone malicious, whom you know nothing about.
Another cause could be that you have some malware on your network that is attacking sites.
The author could be infected with something that wakes up sporadically (perhaps on external command) to participate in an attack, and then returns to dormancy. So the Cloudfare block being lifted isn't necessarily evidence that all is well.