@fairyvearth You can just copy the speed dial from your Other speed dials folder to your Speed dial folder in Bookmarks, that's easy. What isn't available is any way to make them stay in sync in the future, if you will still be using both devices.
I have the same problem: server error. I'm trying to pass the bookmarks of my old smartphone to the new one and the only thing I can do is to have hundred of bookmarks saved in my old computers all together. I'd like to organize alla my recent bookmarks as they were in my last smartphone, but it' s impossible. I'm thinking to use another browser.