In the Play developer console it says:
Your APK does not seem to be designed for tablets
But I have added layouts to layout
Replacing folders layout-sw600dp, layout-sw600dp-land, layout-sw720dp and layout-sw720dp-land with layout-xlarge, layout-xlarge-land added a new message: "your apk does not seem to be designed for tablets."
Solved the problem after what's stated here.
Take advantage of extra screen area available on tablets
Look for opportunities to include additional content or use an alternative treatment of existing content.
Use multi-pane layouts on tablet screens to combine single views into a compound view. This lets you use the additional screen area more efficiently and makes it easier for users to navigate your app.
The problem was really the white space and had nothing to do with the xmls.
I managed to make the message for 7i tabs go away by rearranging the layouts to cover the screen and not leave too much white space. But not for the 10i tablets as the area is too big and my app has very less content. I must consider additional content.