There is grammatical gender in Polish (and a number of other languages) and there is no easy way to address both women and men (well, there is, but it looks awkward). There's a couple of statements that would need {{GENDER}} support in order to look good and natural in translation.

Say, in the case of https://translatewiki.net/wiki/Wikimedia:Wikiedudashboard-dashboard.no courses student/pl, ideally I would translate it as:

Wygląda na to, że nie {{GENDER:$1|zapisałeś|zapisałaś}} się jeszcze na żaden kurs.

Ideally this should also be implemented in:
URL: https://translatewiki.net/wiki/Wikimedia:Wikiedudashboard-training.logged out/pl
URL: https://translatewiki.net/wiki/Wikimedia:Wikiedudashboard-courses.join details/pl
URL: https://translatewiki.net/wiki/Wikimedia:Wikiedudashboard-courses.review timeline/pl
URL: https://translatewiki.net/wiki/Wikimedia:Wikiedudashboard-training.logged out/pl
URL: https://translatewiki.net/wiki/Wikimedia:Wikiedudashboard-wiki edits.notify overdue.header/pl
URL: https://translatewiki.net/wiki/Wikimedia:Wikiedudashboard-error.oauth invalid/pl