All Fuel Indicators Read NA

Except for Fuel Rate

https://drive.google.com/file/d/1AAA3j19T71kekjLxVMkOILmhKQcqA6Im/view?usp=sharing[/img]

Device: Galaxy Tab A8
Engine: CAT C7

I've struggled with this issue for the past two years. It looks like I need someone to hold my hand as we fix this issue. See picture above with readings circled in red. The greatest need is fuel level and remaining fuel.  I figure, fix those two and the others will fall in line.  TIA Chuck

Have you taken a look at the Getting Started document's Fuel and DEF section? You may need to have the App calculate fuel level for you.