You should have the lvl 5 title unlocked but you will have to go to Manage Clan and select it in order to use it.  It generally only unlocks in your personal titles section if you join a clan that already has it unlocked.  As far as the emblems go, you are in the same boat as pretty much every other clan out there.  You will have to fill out the missing emblem form each time that you reach a lvl where an emblem is supposed to unlock and wait however long it takes for them to unlock it for you.  It's frustrating but we all have to do it.

best way you could do it is to make a 2nd account and pass the clan on then just pass it back to your main account once you have got the emblems.