Integrating Stripo in Bento is a fairly easy process, but it may not be the most intuitive.
When you open Stripo, you might look for "Export HTML" where you expect to find the HTML to integrate into Bento. However, if you take this option, the template won't be completely editable in Bento.
What you need for this integration is the "</>" icon, which you can find in the upper right corner. When you click on this icon, you'll get the full HTML code that you can copy and paste into Bento without a problem.!