In macOS 10.4 Mojave, Apple built-in applications use hardened runtimes. Apps using hardened runtimes can not load third party plugins unless explicitly allowed by app developers. This means that third party camera drivers do not work with Apple apps.
We are trying to find a solution to this, but at the moment there is nothing we can do about this issue.
More information on applications that support or do not support EpocCam on macOS can be found here.