The issue is in the stop loss and the advice that is given on the stop loss.
The issue is you didn't check a box that clearly said the order wouldn't be executed outside regular hours, or you didn't set the order as GTC. Both are your fault, you should check the settings of the orders you sent to the market.
You asked your broker to explain on how to place an order, they clearly did since you did place the order. You fucked up the settings, suck it up.
Damn this thread really is pathetic ...