Activating OptiSurface Designer and Firewall Parameters
If you're having trouble activating an OptiSurface Designer license, it could be due to your antivirus or firewall software.
Disable firewall and virus scanner for 1 minute while you activate the codes.
Or connect to internet via another wireless connection if on a laptop.
Or if you want to get more complex, then get your IT support person to allow OptiSurface Designer to communicate with the internet (setting in firewall or antivirus software) by punching a hole through your firewall to:
Port: Port 443 is used for communication but Port 80 may also be used as a fallback.