Up until 2015 or so, you had to buy certificates from companies who made the process of renewing a cert miserable. When Let's Encrypt opened to the public, you'd typically install an ACME client on your server to handle the renewal automatically.
But as it turns out, sometimes your cron jobs break, and the sysadmin is too busy making jokes about poop to care about the expiry warning emails. This is what happened in the case of Raddle.
Also automatic cert issuing needs to verify site ownership, and this can break too (e.g. if a cert covers many (sub)domains, and one of these domains is removed).
this forum has reached a milestone
emma wrote
Reply to I removed a Nick Robinson video cause fuck him but it was about Rusty's Real Deal Baseball which I should mention is a fucking great game by devtesla
*taps mic*
Rick Nobinson