Help! Can't edit graphic watermark

[Jeremy1028$]

I'm unable to edit a graphic watermark. Meaning, the "Options" (opacity, offset, radius, alignment, etc) are greyed out and unable to be changed. 

The source file was a .png which was exported from Adobe Illustrator. I'm using Lightroom Classic. I'm able to edit "text" watermarks, however have no ability to change the same settings when using ANY graphic. 

I've tested using .jpeg as well as .png. 

[Todd Shaner · Accepted solution]

Those settings are used with a text watermark for applying a drop shadow. If you want a apply a drop shadow to your graphic watermark you'll need to add it in Illustrator or Photoshop.