Iāve experienced this same issue, though the continuous loading was shortly followed by a notification āSomething went wrong. Please reload the app.ā I hadnāt even loaded a model yet, simply opened the 3D workspace.
I also tried reinstalling the App, which did not help, though the browser version did work for me.
I found this under āToggle Developer Toolsā that may be useful? Iām a bit illiterate when it comes to software development.