This problem can manifest in two ways that I am aware of. Some users are unable to open their SPSS License Authorization Wizard. It is recommended that you are relatively experienced with computers and using command lines. You can also visit the IBM SPSS Student Support Portal for help. This will require the use of the command prompt (Windows) or terminal (Mac).
This post will detail how to activate your SPSS software if you are unable to open the SPSS License Authorization Wizard.