I just took a basic install of UI7 (1.7.439) on a Vera 3 unit, added the SQBlaster Plugin from apps.mios.com, and used the Advanced Settings to give it the IP Address of my SQBlaster Device.
After this, the Settings tab of the SQBlaster Device is showing that the Device is Up, along with the version information for the Puck. I checked the logs also, and it all looks correct at that level.
At the top of the Settings Dialog, there's a chunk of Text coming from Vera, with no explanation: Can't Detect Device
But other than that UI7-introduced issue, the Plugin is detecting the SQBlaster device correctly.
Do you have more specific information on what's not working? Please be as specific as possible, with step-by-step instructions (or sample XML files, for IR Codes, etc) since there's a devil in the details here.
PS: I have no idea why Garrett thinks you need a VPN to get the SQBlaster Plugin