iPad not syncing with Laptop version?

I recently upgraded to use sketchup on my new iPad. When I downloaded Sketchup onto the iPad, I saw my work immediately and starting working on the iPad. However, now I am trying to work on my laptop and the files are not showing the latest versions of the files what are currently on the iPad. I searched and someone mentioned a “publish” button, but I don’t see that option on my iPad under the 3 dots.

How do I get these files to sync and update so that I can toggle between the iPad and the Laptop?