try
1 unplug wash motor. turn on and see if machine will run without. try a drain cycle only and see if it will empty. if yes should open at the end
2 there are 2 types of door lock. The instant type that goes click and let you in and the time delay type that make you wait 3 to 5 mins to open. If it the instant type. Remove kick strip and bashing it you will find a green tag. unclip the tag and pull it down with one hand and open door with the other
if its the time delay lock the with machine unplugged it normally opens within 5 mins
Dave