Cate-AppQuestion

Already tried turning the TV off and on and unplugging for 10 minutes. There is no APPS tile in the horizontal tile row, so I can't load a third-party app like MLB.TV. No luck with the WebOs tile, or the LG Content Store. When I try the LG Content Store, and click on Apps inside that, I am only offered pre-loaded apps - 600 or so, but no MLB.TV. Any help is greatly appreciated. Thanks.