hmmm… hope there is not a strange side effect from the former installed NXI…
Can you check the LocalCache Folder ?
I own the Steam version, so not exactly sure about the path, but should located somewhere here:
C:\Users\yourusernameAppData\Local\Packages\Microsoft.FlightSimulator_8wekyb3d8bbwe\LocalCache
then futuremore to: Packages\Official\OneStore
Are there folders like “*-g1000” in there ?.. can you try to remove these ( or if unsure just backup ) ?
EDIT: ha, now I also found the topic where the user reported that possible fix