Key

[fierygraph23]

I can't get into the last event in Adventure  (pvz2). Someone please help, any suggestion will be greatly appreciated

[MAGICDAVESHROOM]

It's a bug.  Modern Day costs two World keys to open and players who decide to open the worlds in a different order than they are on the map will be one key short.

Contact EA Help and open a case "missing content" https://help.ea.com/en/by tapping HELP at the bottom of this page. 

I thought they'd fixed this a few months back.