pixel_player77312240 I noticed that same thing happened in one of my games in the app. Not certain, but I think I ran over to the guard blocking Alice & when he didn't move, headed back in the queen's direction. Suddenly bother were out of the way.
Try refreshing the game window /app. Sometimes switching to Flash on PC helps (can only be done if you've been playing before 2/2019.)
Otherwise, contact SUPPORT: https://portal.pixelfederation.com/en/diggysadventure/support
Scroll down for category options to begin the form.