SOS! Deadline looming and new to Storyline - can't edit a slide I made, everything greyed out, three weeks left of free trial

Hi, Ruth, 

In your video, you have a Master Layout selected when you tried to click the objects. However, it looks like everything is on the Master Slide:

Go to VIEW> SLIDE MASTER again, and select the Master Slide to see if that's where the objects are.

FYI:  Anything on the Master Slide will be on all of the associated Master Layouts. That's why both the Master Slide and Master Layout look the same in your example.