They may simply just not like the toys that you picked out (sorry!) For me, my birds all like chewy rope toys, but Emma likes mirrors and bells and Grace likes rawhide stuff...maybe you just aren't getting the toys they like...watch them and see if they like chewing or ringing bells or what...I don't think anything is wrong, because you say they are flying around, correct? So if they chirp often and are active, they should be fine.