Alexa Cookie is not saved

[dynamicdave]

I agree with Simon @cymplecy the node is very problematic, although it has worked for me (apart from Device Activity not working) for the last year or so.
I bet it will "play-up" now I've said that.
Here are my settings and where I keep the cookie text.

Here's a posting on what I use to detect device activity...

Alexa node-red-contrib-alexa-remote2-applestrudel how trigger to get activities

Have a look at @smcgann99 creative solution using VSH and a virtual light. I've been using it to trigger a number of my devices for over 6-months - works faultlessly.