Problem with getting LoL items while having active Xbox Game Pass Ultimate

Hello! I have activated the Xbox Game Pass Ultimate subscription month on PC. I wanted to link a Riot Games account in order to unlock all the champions in the League of Legends game. However, after linking the Riot Games account to the Xbox account, I still cannot get these champions, although I received a notification in the LoL launcher that "within 24 hours you will receive your in-game content." I activated the subscription on 10.01.2023, today is exactly a week since I linked my accounts, but I still haven't received a single champion that I could use without buying it

:)