I must say though, I'm sure to run a service they don't have to register a business, even if they were legit or not..
They're the ones claiming to be "the most professional". I'm sorry, but you're not "the most professional" if you don't even have a business structure.
If they change that to be "a guy in his mom's basement pretending to be running a mining operation but really it's just a ponzi", then at least it's accurate.