Convox deploy with CircleCI

Build Environment
1

I am getting this error when I try to deploy with convox.
I did follow this doc but still an authentication error. Convox Docs
do you know where could be the issue?

#!/bin/bash -eo pipefail convox deploy --app appcicdtest

Packaging source... OK ERROR: authentication failed Exited with code exit status 1

CircleCI received exit code 1

thanks
Max