«The license key is not suitable for this program version» message
If you see the «The license key is not suitable for this program version» message, it means that your license key was purchased for older or newer program version.
You need to install an appropriate program version. Please download the latest version on the Download page.
Mind the Softphone.Pro 5 support has ended on December 01, 2025. Please install the latest Softphone.Pro 7 instead.