Online gambling is largely unregulated in the U.S. That means the casinos serving U.S. players generally don't answer to anyone. If you have a problem with a casino (like they won't pay you), then you're usually out of luck. I can't count how many players have written to ask me for help because they didn't get paid by some other casino. (Not that I helped them—if a dodgy casino won't pay you then you're on your own.)
A straight is a hand with consecutive ranks, like 9? 7? 10? 8? 6?. Notice again that the cards don't have to appear in order. The order of face cards, from lowest to highest, is Jack, Queen, King, Ace, which we abbreviate J, Q, K, A. An ace can also count as 1, to complete a straight where the other cards are 2, 3, 4, and 5. But it can't count as both a low and a high card, e.g., Q K A 2 3.