E-flite blade x question
 

Hey guys, my first helicopter i own is the e-flite blade x i got it for christmas and flown it once and crashed it broke the blades and had them replaced so i tried flying it again and the bottom blades won't move, they spin just won't move left right back and fourth, to much the servos move but the blades won't i don't know to much about it so i'd thought i'd ask here before going to the hobby shop. thanks guys hope yall can help me out!