Looks like you have Safe and Smart. Lane keeping being turned on causes trackapps on mine to gray out. (If I'm recalling correctly it is the button on the end of the turn signal stalk) I don't believe this can be disabled in the settings it has to be the button. Also make sure the distance...
Not sure if it will help out with an aftermarket gauge but there is a thread on installing the stock PP gauges in the DIY section. You might just have to enable the transducer in software and tap the stock outputs...