Right now, streaming and/or publishing is not something we can provide.
For intros/outros we are using intro-outro-generator des c3voc. More files can be found in our github orga (r3voc)
As for recording / streaming, we are using the complete voctomix stack from c3voc. You can find more information in the voctomix repo
Here you can find many issues with possible fixes.
Most probably it is a HDCP problem. Check if the “HDCP Authorized” checkmark is disabled. If not, then you have found a new problem.
Another reason might be that the Output Format is set to AUTO, which does not work if the capture card is not used in between two devices but rather as a standalone capture card (when the output of the capture card is not connected)
Also check that the refresh rate matches the deployed config, which typically is 25 Hz