Hi all,
I was seeing the same thing 5 days ago as well. This thread looks like the best place for updates, although this problem is not currently acknowledged in there…
It looks like an issue that is entirely server-side, but I wonder if a UEFN update is needed to fix this. (Scheduled for Nov 2)
As a workaround you could add the assets to a UE project, and then migrate (using the built-in migrate function in right-click menu) assets to a UEFN project.