Why I am asked to review a license even I am using a student's version?

Hi, I bought 2017a student version of Matlab & Simulink. Haven't used it for months but when I tried to use it again, it asks me to update the license. How come? Isn't license that came with the Student version a perpectual license?

Answer 1

[Andreas Goser]

Did you purchase a Student Version directly from Mathworks, or is what you have bought from your university?

Answer 2

[b b]

I bought it directly from Mathworks online store.

[Andreas Goser]

I agree with you the license is perpetual (with the exception it is expected you sop using the Student Version once not being a student anymore).

So what happens when you click on "update license"? I expect this just being the update of the license file, not purchasing an update.