Well I think it might be due to how bad the leagues are cause sometimes you can enter a higher rank were everyone is so high you cant win at all and play in the league is actually you wasting your time until you get demoted. This is partly due to character stats being lvl ed up by money and that after the new lvl limit they also boosted or removed the limiter on stat boosting per a lvl. Also on mobile at least league doesnt display the timer for the current rank anymore since its update. Also keep in mind if your a know how player your at a serious disadvantage as charm and hardcore players had access to at least 4 to 6, 5 star legendary girls and know-how players only got 3 max(nier girl, gender bend writer of the game, and the girl from champion mode won from Itachi) so if you got none you will have to raise your in the market and maybe boost.