Hetzner is totally fine with individuals, they're probably sad to get less money but they don't care. Remember that in Germany a GmbH company costs $25,000, and if you're not a GmbH you're (in most cases) an individual sole trader.

They're also a bit picky with who they allow to sign up and they discriminate by country of origin. I had no problem being from a first world country with a passport, but I've heard the horror stories. If you're from Asia or Africa you may have an issue - if you have a registered business (even a sole tradership) in Europe, that would probably help convince them.