You can also use F1 (passed through, of course) to bring up the About dialog in Notepad++
Alt,?,A (and to be clear it is ALT followed by question mark followed by A, it's not a 2 or 3-key simultaneous press) works just fine, too.
Brian - Windows 10 Pro, 64-Bit, Version 1903, Build 18362
The color of truth is grey.
~ André Gide