Thanks for the details here and welcome to the forum. Last.fm login within Roon typically requires an email address and password combination. Have you verified that you can log in with the same credentials on the Last.fm website?
looks like last.fm is getting my plays from the qubuz connection. However it was still not working from roon as of last night. I double checked my credentials and can login to last.fm directly
The reported issue has been forwarded to R&D. In the meantime, would you kindly confirm that the workaround provided by @vessmier is also working for you?
We noticed you aren’t running the latest version of Roon and Roon Server, if you could please update your devices and then attempt the steps @vessmier mentioned above, it would a good test with the latest versions of Roon.