When trying to add your Snom phone to Flexor a Snom Phone Security Lockout message appears.
This can occur if you are using a newer "D" series model and have not updated Flexor to version 2.1.154 as per the user guide.
De-install the existing installed Flexor using Microsoft Windows Programs and Features. This will not remove your Flexor settings as they are stored in the Microsoft Windows Registry.
Please download Flexor version 2.1.154 from the following link Flexor version 2.1.154.