Why can't I add a app from the Google play onto my Samsung Galaxy Tab 3

[GhostDriverSK]

Hello, I am trying to add a app from the play store that's intended for Android devices
here is what it says :

Your device isn't compatible with this version.

HELP! please

 

[belodion]

Welcome.

That usually means that your phone's hardware or software will not run the app. Take a close look at the requirements in the developer's description.

 

[GhostDriverSK]

its for the Flexx Drivers app ill try to post it here