VPN Client Lite license full - how to recover installs on discarded PCs?

Essentially, we have installed our Netgear VPN Client Lite Software the maximum number of times allowed by the license - 5

 

We finally reached a point where we need to install it two more times.  We realized that 3 of the previous installs are for laptops or pcs that are no longer being used, but there was no way to "undo" the use of the key.

 

No where on the Netgear site or online, could I find a vendor for a new version of the VPN Client Lite Software or if there is a alternative product we can purchase with more installs / keys.  The trick here being, that I am not familiar with how the PROsafe SRX5308 was configured and have been just copying the config file on my laptop to the other computers as needed.  Hopefully that makes sense and wasn't too much of a tangent.  

 

TL/DR  Anyone able to tell me if I can get my license reset? and if so, is there still a way to purchase additional license space for the future?  or is there a better VPN software that will work with my existing netgear software?

 

 

Thank you for your time