Apple Pencil paired, but not working
OK, so I've been using my Pencil with my iPad Pro for more than a year, successfully. Today, I went to use it and it is not writing. It is paired, the Bluetooth menu shows "connected", the double-tap function works, the tip is well-connected and in mint condition, the battery is at 100%, I have restarted the iPad Pro twice, and it is up-to-date.
When I touch the screen with the Pencil, nothing happens. I can write with my finger, but nothing happens with the Pencil. I tried to mark up a PDF, I tried Notes, I tried Notepad+ Pro.
I'm baffled. Can anyone help?
iPad Pro, iPadOS 14