Activating Adobe fonts doesn't work

Hello Van der Burgt Reclame,

Sorry to hear about this experience. I hope the suggestions shared by Ton and Bill helped resolve the problem. If not, kindly try the following steps and share your observations:

1. Close all Adobe applications
    
2. Uninstall the Creative Cloud Desktop application by using the uninstaller: https://helpx.adobe.com/creative-cloud/help/uninstall-creative-cloud-desktop-app.html
    
3. Reinstall the Creative Cloud Desktop application by following the steps shared in this help article: https://helpx.adobe.com/download-install/kb/creative-cloud-desktop-app-download.html
    
4. Relaunch Illustrator

Looking forward to your response.

Thanks,
Anubhav