This happens for multilayer, same day games, different kick off times. Game 1 is OK, progressing to game 2 gets stuck in processing, the non host can holiday to get it through.
I'm not sure, my understanding is that it's 5 max, under the new rules extra places are granted on co ef and unsure if this overrides the max 5 rules. I fully expected to be demoted to Europa but start of the next season and all my club vision targets are based on UCL.
I finished 4th in league, man utd finished 5th and won ucl, arsenal finished 8th and won UEL, all 6 teams have qualified for UCL at end of 23/24 season.