Eyedropper tool not working in Captivate 2019

I use Adobe Captivate 2019. I am using a Macbook Pro with the macOS Mojave system. The eyedropper tool is not working for me. I have tried to select the eyedropper tool and the select the color I want. No dice. I then tried to select the eyedropper tool and drag it to the color I wanted, again nothing. Any suggestions?