Site Defaulting to New to Twine(?) screen

Hi!

I am using Twinery with my class and it has been working very well. However, today I was coming across a glitch that I could not solve.

We are using chromebooks. One of my students went to play his story but hit a "new to twine" page instead of his story. When he tried to go back, he continued to hit the same problem. He eventually got back to his home screen which told him that there were no stories saved. We pulled an old archive of his story and got that to load. However, when he went to play the old archive file, he continued to hit the "new to twine page" and could not play his story. Just wondering if there is a solution to this.

Thanks!