So, there is this bug that prevents people from talking again to Albie Weekes when quitting the game during the first talk. Fortunately, this bug seems to be resolved since update 4. But for people who couldn't get their hands on it (like me), or who still have that bug, here is the result of my two days of "research" in Hogwarts Legacy's save files.
This resets the broom class with professor Kogawa.
This works on the base game (with no updates), and may work on update 1, 2 and 3, but it doesn't work on update 4 and after because the save format changed.