The license issue is commonly solve by an re-installation of Chart FX. Please note when Chart FX is installed on a machine, the license keeps record of the machine-specific information such as machine name, IP, MAC address, and others. If any machine settings were changed, you should completely uninstall, and then install Chart FX again.
I strongly recommend you to completely uninstall you current installation, download the latest version of Chart FX and then install again.
If you need further assistance, please send an email to support@softwarefx[DOT]com. Do not forget to send them your Serial Number as well.