I’m in the same boat for both Expert & Legendary difficulties. When the event says we have until November 2nd, and the in-game countdown says there’s still 12 hours to go in the event, we really should be able to complete all the event’s challenges instead of having them just disappear early without warning.
My replay codes: J8AWTF (expert), 3T2TY6 (legendary)
edit: it looks like it’s in the known issues pinned post so hopefully the rewards will be applied retroactively when the issues are fixed.