I also have scanning issue. I didnt want to start new threat to clutter posts.
I have the Fujitsu ScanSnap ix500. Setup and wifi have not changed in last 2 years. It connects via wifi to the router 3 feet way.
For whatever reason, for last 2 weeks, the orange light signalling a weak wifi connection, has remained on despite reinstalling, reconnecting to network, windows updates etc. It still works wirelessly but constant orange light can be annoying.
Thoughts?