Ok. I also think that's a terrible screen. Return it immediately!!Don't got anything else, I don't have a tablet, just my old Samsung Note20U.
Can't see those lines, but even with these pics I'd say it's pretty telling how horrible the grain is and that even when viewed head on you can see a green tint both at the bottom and at the top of the display
I mean, you don't necessarily need a G9N panel; the chances of getting one are practically nonexistent anyway (17 PM). But the screen should still be nice and uniform if you look directly at it, not grayish or whatever.