Buy Prices and Actual Purchase Off Key List

Pat, I asked this question on Twitter but did not get an answer to it. I'm new to the service and want to make sure I understand the system properly. On your key list videos, you'll mention entry prices as the stock moves above its base. If it's one I like, I'll go ahead and set a stop market buy order and corresponding stop sell order. I have seen times where the stock will clear that price, and my buy order will fill. I'll then see a tweet from you stating that we did NOT buy the stock (which I did). Today's example is GPRK. You'd noted $15.70 as an entry. There was an "alert" tweet showing it was approaching that price. It then went up to $15.81but then squatted. There was a later tweet by you stating we did NOT buy GPRK. What information did I miss about not buying the stock even though it moved passed the buy price and the alert tweet was sent? I certainly understand the risk involved and am supremely confident that the gains on stocks that move will far outpace the ones that squat and stop me out. I just want to make sure I'm not missing something. Thanks.