I'm sorry you faced that frustration. I knew how it felt like having lost a work done for 2 hours. But my experience was not in Simily. It was at my workplace in the past.

Anyway, I was going to share with you that the X in red existed if you hover your cursor to the image or wait for the page to stop doing what it is doing. Because the 'action' by its platform took a bit of time between saving, and reverting to other pages.

I recommend that you write on Grammarly or elsewhere before you paste the final story into Simily. At least you'll have a backup copy.