TRB141 MQTT Bridge to AWS Core Iot not working

I have created a bridged broker + publisher to AWS core IOT, but this does not seem to do anything. I have added topics ‘id’, ‘get’, ‘device’ bidirectional but nothing is returned when I publish to ‘device/get’ with message ‘id’.
I’m using the same certificates I created for my ‘thing’ in AWS, its attached to a policy that should allow bridging :
{ "Version": "2012-10-17", "Statement": [ { "Effect": "Allow", "Action": "*", "Resource": "*" } ] }
Are there some specific settings for a bridge MQTT broker required for AWS?