If you search "Dwarf" in the official Bit.Tube discord, you can read some info from the main Admin of their discord. Apparently he purchased one or more, received it, verified that it worked. Then after spending more time with it, realized it wouldn't hash for more than 20-ish minutes. He either inferred or talked to the Dwarf team directly, that they created the miners, they weren't stable, so they were selling these faulty miners to finance their next round of miners that would hopefully work. So it looks like they never intended to share these devices, but simply were selling them to cover their own costs. Why they would send faulty miners at all is beyond me. This is from the main Bit.Tube guy, but take it with a grain of salt.

Here is the invite to do your own searching:

https://discord.gg/mZ5EAz