Can't toggle on "Match Design Layout"

I build promotional flyers on 8.5" x 11" workspaces and Adobe Express used to make it really easy for me to change those flyers into 1920p x 1080p, to use for digital displays.  I would just go to the "Design" section, choose a pre-built design and it would reorganize my project to match that pre-built design.  I might have to do a little adjusting, to make it look good, but not much. 

That's the way it used to work...

Now when I chose a pre-built design, my project doesn't change to match that design.  I noticed that there is a toggle at the top of the design section that says "Match Design Layout" and it is toggled off.  I assume if that was toggled on, then it would behave the way I want it to.  However, it's not possible for me to toggle it on as it is grayed-out.

Any idea why it would be grayed-out?  Is there a way for me to toggle it back on?  I do have Premium access, if that matters.