I had already swapped to the superceleron ROM when you replied with the app name. So I tried it on his ROM. I installed the lite version and I have no OBDII device, but it seems to run correctly. I added some gauges, dials, and graphs. When the app is first started, some of the added displays start in the wrong orientation but they quickly rotate to the correct orientation. This can be seen in this video, note also toolbar can be hidden.
In the app at Settings/Settings/General Preferences there is a setting for Auto rotate. It appears set by default, perhaps turning off that option will resolve your rotation issue.
I had no trouble deleting displays in superceleron’s ROM.
I will swap the firmware back to the latest Khadas Android 9 and see how the app does there.
@tschultz Brand new VIM3 Android firmware from Khadas. See release notes here.