Hello Codeforces!

I found that the site https://sio2.mimuw.edu.pl/ contains lots of tests of Polish Olympiad in Information (POI). But I can only enter the 1t stage of the contest and download tests. When I enter the 2nd stage manually (such as https://sio2.mimuw.edu.pl/c/oi22-2/dashboard/), it gives me 403 so I can't access the contest page. How can I get access to the page and download the tests?

If it's not open for everyone, is there anywhere we can download tests of POI? I think there was a site main.edu.pl several years ago, but it seems the site is down.

Thanks everyone.