I played a whole season in dynasty mode,and i got the number seed with 107 points,but the playoff tree is not highlighted or anything to do with the playoffs.Did i *** up somewhere before starting the season??

You have to advance the calendar and it will show up. Just advance one day at a time and around half a week to a week later the playoff menus and games will show up.

It's weird that it doesn't automatically advance you, but just add it to the list.

i just finished my dynasty season and got the #1 spot as well and the achievements for best regular season did not open up. I too did not see the playoff schedule either. Hopefully it'll show up. I am going to be furious if i spent all this time and nothing shows up.