Can you repackage you the app as a package file (.pkg) instead of a .dmg file. Then try installing again?

If you just downloaded the dmg from the vendor and then uploaded it to Jamf Pro, it will not work. The typical dmg download from vendors are desgined for drag and drop install, with the .app file at the root the dmg volume. 

However, to use a dmg in Jamf, it needs be built with the same folder structure you want to install the application in to. So, if you want to install the application in the /Applications folder you need to build out the DMG with the .app file in a folder called /Applications on the DMG.

Your best best is just re-package the application in a pkg file using Jamf Composer or similar tool. 

Hi @Lavon ,

I agree with @Tribruin & @mvu .
Here is the Jamf Composer documentation, where you can create recipes based on your needs.
https://learn.jamf.com/en-US/bundle/composer-user-guide-current/page/Composer_Overview.html

I can suggest this Quick Action to generate Packages: https://macos.it-profs.de/macos-create-installer-from-an-app/

You need a Policy which "Caches" the DMG-File to the "Jamf Waiting Room".

Afterwards I run the following Script which does the copy of the App from the mounted DMG File etc.

JAMF-Install-APP-from-DMG