On how many devices can I activate my license?

mySteganos Online Shield VPN:

You can use your license on up to 5 devices. That includes Windows PCs, Android, iOS  & macOS devices.

Privacy Suite 21, Safe 21, Password Manager 21:

You can use your license on up to 5 Windows PCs.

Steganos Tuning PRO:

We offer licenses for 1 or 3 Windows PCs. 

OkayFreedom VPN:

Your license is for 1 Windows PC.