It says your storage is full in the PMs. You'll have to delete some of your old ones to get the new ones.
Here is the list I've tried to send:
2009 Score Glossy 249 Josh Morgan
2010 Classics Classic Triples 4 Jones/Taylor/Rathman
2010 Prestige Touchdown Sensations 18 Vernon Davis
2010 Prestige Rookie Review 12 Michael Crabtree
2010 Prime 4th Quarter 4Q-16 McCluster/Dixon/Berry/McClain
2010 Topps Chrome Anniversary Reprints 5 Frank Gore
2010 Threads Century Legends 4 Steve Young
2010 Topps Gridiron Lineage MC Montana/Clausen
2010 Threads Generations 1 Jones/Davis
2012 Prestige Connections 19 Smith/Gore
2012 Prestige Draft Tickets 23 LaMichael James
2012 Prestige Extra Points Gold 295 AJ Jenkins
2012 Prestige League Leaders 7 Foster/Gore
2012 Prestige League Leaders 19 Foster/Gore/Lynch/McGahee
2012 Topps Legends in the Making AB Anquan Boldin
2012 Topps Legends in the Making FG Frank Gore
2014 Bowman Rainbow Gold R91 Trey Millard
2014 Topps 1950 Bowman Minis 23 Trey Millard
2014 Topps 1950 Bowman Minis 52 Carlos Hyde
Thanks