[vinylweatherman]

I am surprised to hear of Roxy pulling this stunt. If this were the case, then they would have no need to specifically mention 3-card poker as well as all Video Poker.
If the intent was for the bonus to be slots only, why not say so!!
I am pretty sure that the Roxy bonus is slots only, and I played it this way when I joined.
If the terms are as you say, they should pay up as it is reasonable to consider Video Poker to mean the games under the Video Poker category heading, with Cyberstud being a form of TABLE poker, as is the 3-card variety that deserved a separate mention.
After they pay up, they should review the terms to ensure they are clear.
"Slots & Keno only" is easy to define in an MG casino, as only two game categories are allowed, and this would make things clear.

You could, of course, be under investigation and this is just a stalling tactic. This seems very common, with players getting bizarre excuses in reply to complaints about denied cash-outs, only for it to emerge that all along there was an investigation underway into a number of possibly connected accounts.