Hi,
I’ve moved your topic to the support section of the forum.
In order for Roon’s @support team to better assist you, please provide a brief description of your current setup using this link as a guide.
Make sure to describe your network configuration/topology, including any networking hardware currently in use, so they can have a clear understanding of how your devices are communicating.
Following on from @ged_hickman1 suggestion, in Roon’s Settings->Services also make sure it is using the email address you have registered with Qobuz rather than the user name.