Happened to me. Frustrating experience but afterwards you learned very well that you need to create a product and/or business model with a strong lock-in, not just a nice site or app.
We haven't tested their backend logic which is a huge part of our competitive advantage to other platforms, and mainly assessed the thread by visually comparing the sites.
It'd be great if I could ping you in the next days if we decide to move into that direction again.