I’m pretty sure the Past Hive rewards are now given out when the hive cycles out of matchmaking selection. Which would be in about three weeks. I didn’t get any rewards from any hives for a while now either. They just give them out less frequently now as Operation 2 has a bi-weekly Escape hive release schedule rather than weekly.
On this screen the timer which tells you how many days left to rewards is bugged cause this leaderboard shares the settings with versus leaderboard rewards. The Link rewards are still 6 (or 20 I need to check it) days ahead. The right timer is displayed on the Map icon just before this screen.