Opening app screenshot

You're welcome, agscheire,

If you're unable to resolve it by following the troubleshooting steps we've shared previously, we'd recommend that you contact the app developer directly to investigate this further with you. Here's a great resource which will show you how to locate their contact details: How to contact an app developer

Take care!

Hi agscheire,

Welcome to the Apple Support Communities!

We understand that you're seeing an alert when you attempt to open a screenshot app, is that right? If so, check out the steps outlined here for help to troubleshoot this behavior: If you can’t open an app on Mac

We hope this helps.

Cheers!