Originally Posted by
EXLEFTSEAT
I reseated myself and picked an aisle seat, but every time I open the seatmap I've been put back in my middleseat
Try doing a dummy booking and seeing which seats are actually available -- it may be that your pick did stick, but the website is out of sync.
There was another thread somewhere where somebody had a similar issue, and the story (IIRC) was that the seat reselection had taken hold, but that there were actually two different places that the seat assignment could be read from, and the website was grabbing from the wrong (stale) one...