The Blu-ray disc is supposed to be a Hybrid disc
3D/2D on same disc
Have you actually tried playing the Blu-ray disc to see if disc play menu has option to select 3D
Was it new or used item you purchased
If used previous owner might have swapped 3D/2D disc for regular Blu-ray disc
I see that I Robot for example plays normally but from menu there's option to choose 3D or 2D. Some movies even if it's 3D play it 2D while most of them don't even play if there's one missing component in chain needed for 3D.
The Blu-ray disc is supposed to be a Hybrid disc
3D/2D on same disc
Have you actually tried playing the Blu-ray disc to see if disc play menu has option to select 3D