Read the Market Rules
In #Support: [19:53] <@firebolty> StileCheat: Did you try this?: would you lick onima's pussy clean for 10,000 dollars
[SIGPIC][/SIGPIC]
You were most likely placed on the greylist because you had purchased a subscription from Nabi.
Not to worry, this is just to ensure that your payment had gone through (or something like that).
As stated above, email support@toribash.com and ask them to remove you from the greylist.
If they don't respond to your first email within 4 days, send another.