In the MS Word CWYW plugin, Instant Formatting is on, and toggling it makes no difference (whether before or after citations are added). I can open documents others have created using EndNote, and their citations show up as formatted, but when I add my own, they are persistently unformatted.
I’m having the exact same problem, with almost the exact same setup: EndNote X9, recently installed MS Word for Mac 2016 (16.16.5), installed before EndNote macOS 10.14.1. I am persistently getting references as non-numbered, seen as and bibliography at the bottom of word document is not showing up. Am struggling to get the required output style (numbered supercript, NEJM) in my work despite ensuring that output style is correct and instant formatting is on).