There is a new Beta version of the software V4.4.554 which has a good improvement regarding licence keys https://www.silhouetteamerica.com/so...cXbzFIqkhcX_Zs

Release notes -

New Features

New simplified license key system for software upgrades!

Apply license keys to unlock upgrade editions by going to Help > Apply Upgrade Edition
Once a license key code has been applied to your Silhouette account on one device, you no longer need to provide your license key code on other new devices.
You can easily activate your upgrade edition on up to 3 simultaneous devices by simply logging into your account using your account credentials at Help > Apply Upgrade Edition.

Bug Fixes

The following material settings have been improved for the Cameo 4 range:

Cardstock, Plain
Cardstock, Printable Adhesive-Backed
Copy Paper, Medium (20Ib)
Cork Sheets
Double-Sided Adhesive
Foil, Printable
Heat Transfer, Printable (Dark Fabric)
Heat Transfer, Printable (Light Fabric)
Holographic Sticker Sheet
Holographic Sticker Sheet, Dot Pattern
Image Transfer Paper
Magnet Paper, Adhesive-Backed
Magnet Paper, Printable
Stencil Material
Sticker Paper, Glitter
Sticker Paper, Glow-in-the-Dark
Sticker Paper, White
Temporary Tattoo Paper, Metallic
Vellum
Vinyl, Glossy
Vinyl, Matte
Vinyl, Printable
Vinyl, Silhouette Oracal 651
Vinyl, Wood