I am interested in purchasing Optimizepress. But I am a little confused on which package to purchase. They have three packages, the first one allows you to install the product on up to three sites you own, the seconds, allows you to install on up to 10 sites and the third package allows up to 30 sites you own. The question I have is, how do they control where you install the plugin. I have multiple sites, on various VPS's... so If I purchase the software, how do they know it's my site??
This may be a stupid question but If anyone is knowledgeable I would be grateful for an explanation on how this is controlled and works.