[PyMOL] Pymol Activation

Hello,

I am currently a student and I am using pymol in one of my classes. I was
able to download the software, but I am confused on whether I need to
activate it or skip the activation (image attached below). I was told that
this software was free to use as a student, but in order to activate it I
have to pay for a subscription. If you could help clarify how to properly
set up pymol on my computer that would be greatly appreciated.

Thank you,

Julia Garcia