As an eval customer, you're entitled to submit tickets to our Helpdesk.
Please send mail to support@pipelinefx.com, which will automatically create your account in our helpdesk and also submit your mail as a support issue. You will then receive an account activation email; until you respond and activate your account your ticket will sit in a "suspended" state, but as soon as your account is active your ticket will move into our support queue and be picked up by the next available agent.
But, while you do that, you might also try submitting your render without the Distributed Bucket Rendering (DBR) enabled. Just submit the simplest possible scene to test that Qube and Max are getting along, maybe 1 camera, 1 lambert sphere, 1 light, 2 frames. If that renders, you know that Qube and Max are playing nice, and can start to layer on the complexity.
(this is the first thing that the support engineer will ask you to do anyways, so may as well get a head's start...)