I got all the way to the first project after jQuery which isn’t that far so I tried the Beta since I wouldn’t have to make up much progress. On the very first HTML one with Hello World i did what it asked
Are you using Firefox or Edge? Because if so I believe it’s a known bug that’s been flagged up on GitHub. I’ve come across the same problem and so am having to use Chrome to work through Beta.
I use Edge. That might be the issue.