Word Add-in stopped working after Office upgrade to version 2306 (Build 16529.20154) or higher

This article explains what to do if some of the Multitrans Word Add-in menu options are missing after upgrading Office to version 2306 (Build 16529.20154) or higher (released June 26th 2023):

https://gateway.sdl.com/apex/communityknowledge?articleName=000021013