PDF Expert is a simple PDF editor for macOS, its feature set puts it between the Preview.app that comes with the OS and Adobe Acrobat Pro.
PDF Expert is available from the Mac Self-Service for devices that are properly registered in the network database and that have recently update the inventory while being on site. Other devices are not eligible.
The CERN license for PDF Expert covers version 2. PDF Expert version 3 has been released, but due to the license conditions CERN has not bought licenses for it.
In July 2022 thePDF Expert started to propose and update to version 3.0.23. This update invalidates the license and puts the app into a demo mode. Users should NOT install that update.
In case you have installed the update we propose that you remove PDF Expert 3 via the Mac Self-Service and install version 2 again via the Self-Service - assuming your device is still eligible.