This is the response I recently got. Seems they sit around and meditate if they should let you in. Also I am sure they mediate around your last name, country of origin.

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Our onboarding team reviews each application by hand, and takes a holistic view of your application and business information and makes their application decisions based on a variety of internal factors.

I know this may be frustrating, but we are unable to provide more detailed information as to the reason why your application was denied, and aren't able to reconsider.