What happened when you tried that? Unless it was over the auto payout threshold it doesn't auto send.
I tried the cash out three times and nothing happens. I type in my pin, click "cash out" and the page reloads -- no errors -- and the balance remains.
I'd say go check with nearmiss and crew in the IRC channel, it usually displays a confirmation message, and then about 5 minutes later it gets deducted and sent