I also have a 2017 Keystone Outback with in-command. My tanks are reading good. Be sure you have the latest firmware updates from the follow site.
the latest firmware has improved performance. You can install from the USB port and a USB flash drive, the admin page has the options to install the firmware.
If you perform a reset, it might load the layout for you, maybe loading the tank level option too.
This support page will also contain a customer service contact for any troubleshooting on it as well.