Hetzner will almost immediately nuke your data if you miss a payment and often outright ban you and your business from ever using them again.
Hetzner is great for cheap personal sites but I would never use them for any serious business use-cases. Other than failed payments, Hetzner also has very strict content policies and they use user reports to find offenders. This means that if just a few users report your website, everything is deleted and you're banned with zero warning or support, whether the reports are actually true or not. (This also means you can never use Hetzner for anything that has user uploaded content, it doesn't matter if you actively remove offending material because if it ever reaches their servers you're already SOL.)
Hmm this sounds scary, even though I've had very positive experience with them. Any alternatives with similarly priced offerings that do not face this issue?
That period should definitely be longer than a few days.