At this time the assessment runs on CME Group products only. CME is enabled by default, and we add CBOT, COMEX and NYMEX on request. Eurex isn't available during the assessment.
Eurex is available once you're through to the Live Desk, so if those products are where your edge is, that's what you'd be trading on there.
We're actively working on expanding what's available during the assessment.
If you have any questions, please reach out to support@developtraders.com.