In your first screenshot you entered a username:
However, when logging into third party apps, Qobuz has required the account’s email address for considerable time. Try entering this address.
It would be good if Roon’s documentation mentioned this. I can’t find it in the docs but it has been announced officially on the forum.
The login window should not be labeled „user name“ either because this is wrong, and it should verify whether an email address was entered. @noris please have this fixed, it has been years. [EDIT: Not sure if this is only the case in 1.8 and already fixed in 2.0. Disregard if it’s fixed 
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