This doesn´t seem to be the case in your labs - so you are asked for a new key, every time you install SmartPLS on a new system. As I know from computer labs on our university, my personal desktop as well as my home directory can be accessed from every machine, I log on. If you are a user who is unable or unwilling to donate, you may request a permanent License Key be sent to you by email, by submitting: this form.
After successful activation, SmartPLS stores some information in your home directory. Computer Software SmartPLS WikiHow Product Key Information, PNG. It now depends on the configuration of the computer labs, if you really need a new key on every machine. Computer Software Smartpls Wikihow Product Key Information, Png. If you must use SmartPLS on many different computer systems in computer labs on the campus, that is a 'special' situation. The original key, you received in your welcome email allows you to install and activate SmartPLS on up to 3 different machines (maybe your private system at home, a laptop and a computer at your company).
The activation process of SmartPLS assumes installations on your personal computer systems. I download the software each time I used it because I was using the computer in computer labs on campus where I have to download it each time I work.
Why my key is blocked? May be because I have used it several times.