How to fix a stuck attachment on a Kitchenaid mixer

I am unable to change the attachments on my Kitchen Aide. It wont push up in order for me to turn it an pull it off

crwdns2893858:0crwdne2893858:0 crwdns2893862:0crwdne2893862:0

crwdns2894050:0crwdne2894050:0

crwdns2889612:0crwdne2889612:0 0
crwdns2892346:0crwdne2892346:0