After reading your comments, Our marketers just decided to add the function to use the app as a guest again. So now you can use the app without signing up. Isn't it good?
I feel there should be some demo contant to showcase the learning process. I tried the guest account, but didn't see some demo content to import or try out with and didn't really want to spend the time to manually add content to test the learning process.
Having some demo content would help me quickly decide if this could be a good tool for me.