No screenshot in reports

Hi Prey, thanks for the fantastic software, protecting my Mac since forever!

When I check reports, there is the webcam photo, but no screenshot. How can I enable screenshots?

My set up is:

Macbook Pro, 15 inch, late 2016
LG 5K monitor
Mojave 10.14.6
Prey 1.9.6
I run as a user with standard permissions, with an admin user where necessary.

Thank you!

Has anyone else had screenshots missing from their reports and managed to fix it?

Uninstalled, reinstalled Prey - still no screenshots.

Has anyone else had the same issue?