Bit late to this one, but if anyone’s still going off the older advice in here, the CX22 isn’t on Hetzner any more. It’s the CX23 now, about £5.05 a month ex VAT, and when I last checked it was showing as currently unavailable. That caught me out.
I kept losing track of prices like that, so I started keeping a list of plans people run openclaw on. It’s at https://clawhostindex.com. There are 31 plans on it so far, and I’ve checked 29 of them against the provider’s own page. Some of the links are affiliate ones. They’re marked, and they don’t change the sort order. If your setup’s missing, tell me and I’ll add it.