From the friends reward program, says I have it but posts don't show it.
Forums move quick, bump.
It can take up to 72 hours for the title to show up, as well as any rewards claimed.
It's been a number of weeks since I got that recruiter title award unfortunately. =(
Then I would recommend submitting a support ticket here:
© 2015 Riot Games, Inc. All rights reserved. Riot Games, League of Legends and PvP.net are trademarks, services marks, or registered trademarks of Riot Games, Inc.