Ok that makes more sense, placed order to sell at the current price at the time of $8979 this morning and price has dropped a good bit since then
So I'm going to guess you didn't use a market order, as that would have made the trade go through instantly. You most likely went to trying to use some sort of limit order ( or something of that nature) and your trade didn't go through as the market moved around.
Could we see exactly what your order looks like in order to further help ya out with this problem. Wouldn't want someone trying to buy / sell 13 btc and it not work for them!
All i did was wait until the price hit a certain amount then manually place the sell but looks like the time it took me to login and make the sell the price dropped and left my order open until the price goes back up. In gonna start using the limits to automatically trigger the sells and buys so i dont have to deal with this sort of stuff. Im still new and didnt want to do that but if it means missing out on my profits if i dont then i will of course