Its simple to play with people or freinds of a lower level just by changeing the setting when joining or createing a match by setting the rank setting from same rank to same Rank and higher this automaticly lets you play with people of the same rank higher and lower trust me ino i was playing with my cousin whos lvl 4 and i was lvl 9 we changed the settings that way and we were able to play plus its pretty obvious sinse people of lower lvls can play with higher lvls by changeing the settings it just confuses people of higher lvls that they cant play with people of lower levels then them when they really can O:
Lvls are not ranks. Every 5 levels you got up 1 rank. So you start at rank 1 for lvl 1,2,3,4 then rank 2 for lvl 5,6,7,8,9 then rank 3 for lvl 10,11.. so on and so forth (Guessing it continues in this fashion, my highest character is like lvl 13). The problem is the seperate
ranks not being able to play with eachother. Since you were lvl9 and your cousin lvl4 you were ranks 1 and 2 so you being able to play together and me and my buddy not being able to play together when both pairs had the setting on "my rank and higher" means something isnt working correctly..