This has been going on for an age this end. I can tentatively can confirm closing Magnet seems to have solved the issue this end as well, thank goodness. Annoying that I now can't use Magnet as it's an extremely useful tool, though not as annoying as...

Yes thanks, my collaborator found the instructions and we've both attempted to connect using the new methodology. Method explanation and instructions below: https://community.graphisoft.com/t5/Licensing/Assigning-Licenses-on-BIMcloud-as-a-Service/ta-...

Sorry if I'm misunderstanding, but I'm not sure how this answer resolves the issue? Are you saying a Basic server works with this kind of set-up where the Paid one does not? I am experiencing the same issue. I have manually assigned the paid license ...