I will give this a try and let you know. I wasn't using an android, was using an iPhone, I believe I have found the ID now, via an app but when I enter it on the game it's not recognised, could you tell me if this is the correct id to be using.
Current Android ID (According to app: Android ID Changer v1.5): 1f1f5cf5bb3397
Attempted a conversion of above ID came up with: 8760208398168983
This ID also doesn't work to transfer my account across
After cat /Id
I get "No such file or directory"