IntelliJ Access Code

Hello,

I am a new user and very new to programming. I tried to install IntelliJ idea and JDK. there was a slide in the course with a code for intelliJ free access. is it necessary that we need to activate that one. have anyone come across this please. also, I am planning to change my laptop and if I change it, can I use the same code to access free IntelliJ in the new laptop as well. Kindly advise. thank you.