It looks as though Alexa-Remote2 has been superseded perhaps by node-red-contrib-alexa-cakebaked
This is a collection of Node-RED nodes for interacting with the Alexa API. You can emulate routine behaviour, control and query your devices and much more!
All functionality is from alexa-remote2. The goal is to expose all of alexa-remote2s functionality in node-red nodes.
I started having the same issues with Routines (now its not listening to anything) then checked my PI. The BAK directory had gone, and the files I replaced were back to the original. I'm not sure how that could happen, but it did.
The downside is, you cant install this Palette without removing Alexa-Remote2
I have masses of nodes running this, so here goes nothing!!