Do I need to pay pension as a student?

I’ve tried searching this up and I can’t get a clear answer but I just received a letter asking for monthly payments for the pension. I heard that students can be exempt from this? Can I just ignore the letter or do I have to actually do something?

(I am over 20, and only here for 6 months total on a university exchange if that changes things)

I would really appreciate any help!🙇‍♀️

by PlatypusNo5609