Drobo Dashboard installer trying to install Digieffects Delirium plugin?

Not sure what’s happening, but when I run the Drobo Dashboard 3.5.0 Install.app on macOS, it tries to launch Install_DE_DeliriumOSXUBv1.app — which is blocked because it’s from an unknown developer. I changed my security settings to open it, and it turns out it’s a Digieffects Delirium audio plugin installer. How the hell would this get launched by the Drobo Dashboard installer? I am so confused.