I'm owner of JIGSAW device without possibility to get public IP address. While looking for workarounds I have found the ngrok service which offers tunnels accessible via URL links. As long as I understand JIGSAW is simply raspberry pi device with custom linux os running under the hood. I wonder if I could login to the device using the ssh to access the root account for purpose of installation and setup of ngrok service. Will you be able to share those? Is ssh access enabled?
Customer support service by UserEcho