IS KYC mandatory or can we use without it?
Didn't found documentation very enlightening on this matter.
They were pretty vague on rules when i was still in, it sounded like they didn't really know what they were doing nor they would wok with any sort of regulators. I mean it wasn't supposed to be even an exchange when they started but an
utility token 
Graviex was just a happy misstep from them that came without any warning.