About texture and shadow in vuforia project on iOS

All the scenes work perfectly in editor.But when I build the project on iPad via xcode, the texture and shadow appear strangely. Only the scenes have vuforia components are effected.I really have no idea how to fix it.Can anybody help me please!!!
,The scenes which use arcamera and vuforia script show differences.but those scenes have no arcamera just work perfectly as in editor. so i guess it’s the problem about my ar thing? REALLY NEED HELP

can anybody help me pls!its urgent!