Text and images not presenting properly in videos

[mareecer]

When I attempt to add background images to my video presentation, they disappear when I go to preview the video. Likewise, some of the text that I type in shows up on the editing slides but not when I preview the presentation. 

[Myra Ferguson]

I found the following page with recommendations that might help (Adobe Express used to be Adobe Spark, so that's why it says Adobe Spark Support):

• Text And/Or Icons Disappeared From My Spark Video Project On Web