Default [Q] Samsung SIII T999, Instagram is not available

I just reactivated my Samsung SIII phone today (was unused for 14 months). I tried to open Instagram but it stated "Your device isn't compatible with this version". I then updated the software. I then went to Google Play and when I select the Instagram app, the previous is stated again. I'm a bit confused as I had Instagram on my phone when I operated it prior. Any help would be greatly appreciated. My phone is a SGH-T999.