I've been testing my games with an old version of GLBASIC (v12) to compile for Mac OS x86. I'm looking to make the game available for vintage Macs and I've had some success with compiling and running on my old Mac running 10.11 El Capitan. However I'm getting the demo message flashing up in the top corner of the screen. I'm a paid up user of v16 via Steam, is there a way to get a licence key to use the older versions as registered?