I always do WBR igniter Ride at 05:30 till 06:30 and then Join WBR Volt, using joing late function. The night before I select both rides. I know I joined as i get a popup auto join at 06:15 whilst riding in Igniter. I say no to autojoin. I then used to finish my ride at 06:30 exit out fire up zwift and join the the next wbr ride. Last few weeks this has not worked. I saw a post from Charlie saying 30mins. What seems to be the problem. They are group rides not a race.
All group rides (not races) have a late join feature that allows you to join the group up to 30 minutes after it has started.
VP EVENTS at Zwift, Inc.