A few years back I launched an io game and used hetzner as my backend. an hour into launch day they null routed my account because their anti-abuse system thought my sudden surge in websocket connections was an attack (unclear if they thought it was inbound or outbound doing the attacking).

I had paid for advertising on a few game curation sites plus youtubers and streamers. Lovely failure all thanks to Hetzner. Took 3 days and numerous emails with the most arrogant Germans you’ve ever met before my account was unlocked.

I switched to OVH and while they’re not without their own faults (reliability is a big one), it’s been a far better experience.

There are a lot of such stories if you go digging around HN and reddit threads. Haven't seen a lot of these stories in a while, so it may be happening less now.